{
 "slug": "okeeffe-roof-with-snow-1917",
 "artwork": {
  "artist": "Georgia O’Keeffe",
  "title": "Roof with Snow",
  "holder": "Amarillo Museum of Art",
  "catalogue_id": "CR 126",
  "accession": null,
  "accession_reason": "holder_accession_not_established",
  "medium": "Watercolor on paper",
  "catalogue_date": "1916",
  "alternative_date": "1917",
  "date_source": "museum",
  "alternative_date_basis": "Peck note 23: a label in O’Keeffe’s handwriting in the Amarillo Museum of Art archives, affixed to the backing of her frame; the Abiquiú Notebooks also give 1917, with a separate entry giving 1915. The catalogue raisonné gives 1916.",
  "image": null,
  "image_reason": "withheld_per_brief_no_reproduction_permission",
  "painted_day": null,
  "painted_day_reason": "no_verified_object_linked_session_date"
 },
 "window": {
  "start": "1917-02-18",
  "end": "1917-04-30",
  "days": 72,
  "status": "peck_terms_test_window_not_execution_window",
  "basis": "Peck’s own terms: from 18 February 1917, the day he dates the move into the Shirley house (p. 105), through 30 April 1917. He writes that any snowfall after the mid-February move could have been the occasion. Von Lintel’s timeline dates the move to 5 February (p. 20); the window does not choose between the two dates. It is a test window, not an execution window."
 },
 "moves": {
  "window_follows": "peck",
  "peck": {
   "date": "1917-02-18",
   "locator": "p. 105; p. 109 note 19",
   "quote_key": "peck-move"
  },
  "von_lintel": {
   "date": "1917-02-05",
   "locator": "timeline p. 20; p. 54 note 139",
   "quote_key": "timeline-move"
  },
  "own_room": {
   "date": "1917-03-26",
   "locator": "p. 105",
   "quote_key": "peck-white-room",
   "before": "Claudia’s adjoining north-facing room, by Peck’s account (p. 105)",
   "after": "her own upstairs room, whose large dormer faced east toward the house (pp. 100, 105)"
  }
 },
 "station": {
  "name": "Amarillo City",
  "id": "23075",
  "id_type": "WBAN",
  "network": "CRB via RCC ACIS",
  "lat": 35.21667,
  "lon": -101.83333,
  "distance_km": 28,
  "distance_note": "Approximate separation of archive station coordinates and current house address geocode; not surveyed 1917 instrument/easel positions.",
  "historical_site": "NWS history places the downtown office at Taylor and Seventh Streets from 1903 to April 1941.",
  "metadata_source": "city-meta",
  "history_source": "nws-history",
  "thread_source": "threads",
  "variable_periods": {
   "tmax": [
    "1892-01-01",
    "1941-03-31"
   ],
   "tmin": [
    "1892-01-01",
    "1941-03-31"
   ],
   "precip": [
    "1892-01-01",
    "1941-03-31"
   ],
   "snowfall": [
    "1892-11-01",
    "1941-03-31"
   ],
   "snow_depth": []
  }
 },
 "place": {
  "name": "Kimbrough House",
  "address": "2000 5th Avenue, Canyon, Texas",
  "lat": 34.978737,
  "lon": -101.92234,
  "period_address": "2000 Fifth Avenue, also known then as Evelyn Avenue (Peck note 4)",
  "locator_source": "marker",
  "coordinate_source": "place",
  "osm_type": "way",
  "osm_id": 21193949,
  "moved_onto_lot": "During 1916, by Peck’s reading of the Randall County deed index: a vacant lot in spring 1916, a house there by year’s end (note 4).",
  "viewpoint": "Across the street from O’Keeffe’s upstairs room in the Shirley house, 500 Twentieth Street (Peck pp. 100, 105)."
 },
 "article": {
  "author": "H. Daniel Peck",
  "title": "The House across the Street: Georgia O’Keeffe’s Roof with Snow",
  "journal": "American Art",
  "volume": "21",
  "issue": "3",
  "pages": "98-109",
  "year": 2007,
  "doi": "10.1086/526482",
  "url": "https://doi.org/10.1086/526482",
  "full_text_inspected": true,
  "text_receipt": "peck",
  "proposed_day": "1917-03-11",
  "proposed_day_status": "hedged_speculation",
  "proposed_day_basis": "Peck p. 106: O’Keeffe’s letter to Stieglitz of 11 March 1917, which he reports mentions an all-day snowfall that Sunday (note 22). The letter itself was not read.",
  "dating": "early 1917",
  "dating_basis": "note 23 (O’Keeffe-hand label; Abiquiú Notebooks)",
  "argument": "Peck identifies the house across the street at 2000 Fifth Avenue as the subject, seen from O’Keeffe’s upstairs room in the Shirley house, and dates the watercolor to early 1917. He writes that it is tempting to speculate that the all-day snowfall O’Keeffe mentioned on Sunday 11 March inspired it, then adds that the day can never be known and that any snowfall after the mid-February move could have been the occasion. He also links the snow imagery to Stieglitz’s December 1916 letters; that interpretation is not tested here.",
  "argument_reason": null
 },
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    "network": 56,
    "source_flag": ""
   },
   "tmin_f": {
    "value": 37.0,
    "unit": "°F",
    "status": "measured",
    "null_reason": null,
    "raw": "37",
    "flag": "",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": "23075",
    "network": 56,
    "source_flag": ""
   },
   "precip_in": {
    "value": 0.0,
    "unit": "in",
    "status": "measured",
    "null_reason": null,
    "raw": "0.00",
    "flag": "",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": "23075",
    "network": 56,
    "source_flag": ""
   },
   "snowfall_in": {
    "value": 0.0,
    "unit": "in",
    "status": "measured",
    "null_reason": null,
    "raw": "0.0",
    "flag": "",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": "23075",
    "network": 56,
    "source_flag": ""
   },
   "snow_depth_in": {
    "value": null,
    "unit": "in",
    "status": "missing",
    "null_reason": "not_reported_by_provider",
    "raw": "M",
    "flag": "M",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": null,
    "network": 0,
    "source_flag": ""
   }
  },
  {
   "date": "1917-04-28",
   "receipt": "city-apr",
   "tmax_f": {
    "value": 61.0,
    "unit": "°F",
    "status": "measured",
    "null_reason": null,
    "raw": "61",
    "flag": "",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": "23075",
    "network": 56,
    "source_flag": ""
   },
   "tmin_f": {
    "value": 35.0,
    "unit": "°F",
    "status": "measured",
    "null_reason": null,
    "raw": "35",
    "flag": "",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": "23075",
    "network": 56,
    "source_flag": ""
   },
   "precip_in": {
    "value": null,
    "unit": "in",
    "status": "trace",
    "null_reason": "trace_amount_not_quantified",
    "raw": "0.00",
    "flag": "T",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": "23075",
    "network": 56,
    "source_flag": ""
   },
   "snowfall_in": {
    "value": 0.0,
    "unit": "in",
    "status": "measured",
    "null_reason": null,
    "raw": "0.0",
    "flag": "",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": "23075",
    "network": 56,
    "source_flag": ""
   },
   "snow_depth_in": {
    "value": null,
    "unit": "in",
    "status": "missing",
    "null_reason": "not_reported_by_provider",
    "raw": "M",
    "flag": "M",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": null,
    "network": 0,
    "source_flag": ""
   }
  },
  {
   "date": "1917-04-29",
   "receipt": "city-apr",
   "tmax_f": {
    "value": 51.0,
    "unit": "°F",
    "status": "measured",
    "null_reason": null,
    "raw": "51",
    "flag": "",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": "23075",
    "network": 56,
    "source_flag": ""
   },
   "tmin_f": {
    "value": 31.0,
    "unit": "°F",
    "status": "measured",
    "null_reason": null,
    "raw": "31",
    "flag": "",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": "23075",
    "network": 56,
    "source_flag": ""
   },
   "precip_in": {
    "value": 0.0,
    "unit": "in",
    "status": "measured",
    "null_reason": null,
    "raw": "0.00",
    "flag": "",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": "23075",
    "network": 56,
    "source_flag": ""
   },
   "snowfall_in": {
    "value": 0.0,
    "unit": "in",
    "status": "measured",
    "null_reason": null,
    "raw": "0.0",
    "flag": "",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": "23075",
    "network": 56,
    "source_flag": ""
   },
   "snow_depth_in": {
    "value": null,
    "unit": "in",
    "status": "missing",
    "null_reason": "not_reported_by_provider",
    "raw": "M",
    "flag": "M",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": null,
    "network": 0,
    "source_flag": ""
   }
  },
  {
   "date": "1917-04-30",
   "receipt": "city-apr",
   "tmax_f": {
    "value": 60.0,
    "unit": "°F",
    "status": "measured",
    "null_reason": null,
    "raw": "60",
    "flag": "",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": "23075",
    "network": 56,
    "source_flag": ""
   },
   "tmin_f": {
    "value": 35.0,
    "unit": "°F",
    "status": "measured",
    "null_reason": null,
    "raw": "35",
    "flag": "",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": "23075",
    "network": 56,
    "source_flag": ""
   },
   "precip_in": {
    "value": null,
    "unit": "in",
    "status": "trace",
    "null_reason": "trace_amount_not_quantified",
    "raw": "0.00",
    "flag": "T",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": "23075",
    "network": 56,
    "source_flag": ""
   },
   "snowfall_in": {
    "value": 0.0,
    "unit": "in",
    "status": "measured",
    "null_reason": null,
    "raw": "0.0",
    "flag": "",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": "23075",
    "network": 56,
    "source_flag": ""
   },
   "snow_depth_in": {
    "value": null,
    "unit": "in",
    "status": "missing",
    "null_reason": "not_reported_by_provider",
    "raw": "M",
    "flag": "M",
    "observation_time_lst": null,
    "observation_time_reason": "provider_time_unavailable",
    "station_id": null,
    "network": 0,
    "source_flag": ""
   }
  }
 ],
 "peck_test": {
  "claim": "An all-day snowfall on Sunday 11 March 1917, from O’Keeffe’s letter of that day as Peck reports it",
  "date": "1917-03-11",
  "weekday": "Sunday",
  "quote_key": "peck-snowfall",
  "verdict": "Contradicts",
  "days": [
   {
    "date": "1917-03-10",
    "precip_in": 0.0,
    "snowfall_in": 0.0,
    "tmax_f": 73.0,
    "tmin_f": 41.0
   },
   {
    "date": "1917-03-11",
    "precip_in": 0.0,
    "snowfall_in": 0.0,
    "tmax_f": 73.0,
    "tmin_f": 29.0
   },
   {
    "date": "1917-03-12",
    "precip_in": 0.0,
    "snowfall_in": 0.0,
    "tmax_f": 54.0,
    "tmin_f": 31.0
   }
  ],
  "conditions": [
   {
    "code": "letter_date_as_cited",
    "text": "The letter Peck cites is dated correctly; the original was not read."
   },
   {
    "code": "amarillo_stands_for_canyon",
    "text": "Amarillo City, about 28 km away, stands for Canyon; a local shower cannot be fully excluded."
   }
  ],
  "possible_explanation": "A dating offset between letters: the archive dates letters by postmark, Greenough’s edition by composition (Von Lintel p. 49 note 10). Not tested; the original letters were not read."
 },
 "broader_test": {
  "claim": "Any snowfall after the mid-February move could have been the occasion",
  "quote_key": "peck-any",
  "verdict": "Partially agrees",
  "measurable_after_move": [
   "1917-03-03"
  ],
  "measurable_after_proposed_day": [],
  "traces_after_proposed_day": [
   "1917-03-13",
   "1917-03-26",
   "1917-04-01"
  ],
  "which_snow": null,
  "which_snow_reason": "record_cannot_link_a_snowfall_to_the_painting"
 },
 "before_window": {
  "start": "1917-02-01",
  "end": "1917-02-17",
  "days": 17,
  "receipt": "city-feb",
  "measurable_events": [
   {
    "date": "1917-02-14",
    "weekday": "Wednesday",
    "snowfall_in": 2.2,
    "snowfall_mm": 55.9,
    "precip_in": 0.22,
    "tmax_f": 33.0,
    "tmin_f": 23.0
   }
  ],
  "after_von_lintel_move": [
   {
    "date": "1917-02-14",
    "weekday": "Wednesday",
    "snowfall_in": 2.2,
    "snowfall_mm": 55.9,
    "precip_in": 0.22,
    "tmax_f": 33.0,
    "tmin_f": 23.0
   }
  ],
  "trace_dates": [],
  "note": "Before Peck’s 18 February move date; reported separately, not part of the test window."
 },
 "snow_test": {
  "measurable_dates": [
   "1917-03-03"
  ],
  "measurable_days": 1,
  "events": [
   {
    "date": "1917-03-03",
    "weekday": "Saturday",
    "snowfall_in": 2.5,
    "snowfall_mm": 63.5,
    "precip_in": 0.25,
    "tmax_f": 27.0,
    "tmin_f": 12.0
   }
  ],
  "trace_dates": [
   "1917-03-01",
   "1917-03-13",
   "1917-03-26",
   "1917-04-01"
  ],
  "trace_days": 4,
  "zero_dates": [
   "1917-02-18",
   "1917-02-19",
   "1917-02-20",
   "1917-02-21",
   "1917-02-22",
   "1917-02-23",
   "1917-02-24",
   "1917-02-25",
   "1917-02-26",
   "1917-02-27",
   "1917-02-28",
   "1917-03-02",
   "1917-03-04",
   "1917-03-05",
   "1917-03-06",
   "1917-03-07",
   "1917-03-08",
   "1917-03-09",
   "1917-03-10",
   "1917-03-11",
   "1917-03-12",
   "1917-03-14",
   "1917-03-15",
   "1917-03-16",
   "1917-03-17",
   "1917-03-18",
   "1917-03-19",
   "1917-03-20",
   "1917-03-21",
   "1917-03-22",
   "1917-03-23",
   "1917-03-24",
   "1917-03-25",
   "1917-03-27",
   "1917-03-28",
   "1917-03-29",
   "1917-03-30",
   "1917-03-31",
   "1917-04-02",
   "1917-04-03",
   "1917-04-04",
   "1917-04-05",
   "1917-04-06",
   "1917-04-07",
   "1917-04-08",
   "1917-04-09",
   "1917-04-10",
   "1917-04-11",
   "1917-04-12",
   "1917-04-13",
   "1917-04-14",
   "1917-04-15",
   "1917-04-16",
   "1917-04-17",
   "1917-04-18",
   "1917-04-19",
   "1917-04-20",
   "1917-04-21",
   "1917-04-22",
   "1917-04-23",
   "1917-04-24",
   "1917-04-25",
   "1917-04-26",
   "1917-04-27",
   "1917-04-28",
   "1917-04-29",
   "1917-04-30"
  ],
  "zero_days": 67,
  "months": [
   {
    "month": "1917-02",
    "receipt": "city-feb",
    "first": "1917-02-18",
    "last": "1917-02-28",
    "days": 11,
    "measurable_dates": [],
    "trace_dates": [],
    "zero_days": 11
   },
   {
    "month": "1917-03",
    "receipt": "city",
    "first": "1917-03-01",
    "last": "1917-03-31",
    "days": 31,
    "measurable_dates": [
     "1917-03-03"
    ],
    "trace_dates": [
     "1917-03-01",
     "1917-03-13",
     "1917-03-26"
    ],
    "zero_days": 27
   },
   {
    "month": "1917-04",
    "receipt": "city-apr",
    "first": "1917-04-01",
    "last": "1917-04-30",
    "days": 30,
    "measurable_dates": [],
    "trace_dates": [
     "1917-04-01"
    ],
    "zero_days": 29
   }
  ],
  "unquantified_dates": [],
  "snow_depth_missing_dates": [
   "1917-02-18",
   "1917-02-19",
   "1917-02-20",
   "1917-02-21",
   "1917-02-22",
   "1917-02-23",
   "1917-02-24",
   "1917-02-25",
   "1917-02-26",
   "1917-02-27",
   "1917-02-28",
   "1917-03-01",
   "1917-03-02",
   "1917-03-03",
   "1917-03-04",
   "1917-03-05",
   "1917-03-06",
   "1917-03-07",
   "1917-03-08",
   "1917-03-09",
   "1917-03-10",
   "1917-03-11",
   "1917-03-12",
   "1917-03-13",
   "1917-03-14",
   "1917-03-15",
   "1917-03-16",
   "1917-03-17",
   "1917-03-18",
   "1917-03-19",
   "1917-03-20",
   "1917-03-21",
   "1917-03-22",
   "1917-03-23",
   "1917-03-24",
   "1917-03-25",
   "1917-03-26",
   "1917-03-27",
   "1917-03-28",
   "1917-03-29",
   "1917-03-30",
   "1917-03-31",
   "1917-04-01",
   "1917-04-02",
   "1917-04-03",
   "1917-04-04",
   "1917-04-05",
   "1917-04-06",
   "1917-04-07",
   "1917-04-08",
   "1917-04-09",
   "1917-04-10",
   "1917-04-11",
   "1917-04-12",
   "1917-04-13",
   "1917-04-14",
   "1917-04-15",
   "1917-04-16",
   "1917-04-17",
   "1917-04-18",
   "1917-04-19",
   "1917-04-20",
   "1917-04-21",
   "1917-04-22",
   "1917-04-23",
   "1917-04-24",
   "1917-04-25",
   "1917-04-26",
   "1917-04-27",
   "1917-04-28",
   "1917-04-29",
   "1917-04-30"
  ],
  "snow_depth_missing_days": 72,
  "roof_snow_days": null,
  "roof_snow_days_reason": "no_roof_observations_and_no_station_snow_depth",
  "fitting_painting_days": null,
  "fitting_painting_days_reason": "snowfall_date_is_not_snow_cover_or_execution_date"
 },
 "definitions": {
  "measurable": "Positive numerical daily snowfall with no flag or source flag; traces excluded.",
  "trace": "Reported snowfall below measurable amount; retained as trace, never a numerical zero.",
  "missing": "ACIS M is unavailable, never zero.",
  "temperature": "Daily high and low in degrees Fahrenheit at Amarillo; not Canyon measurements.",
  "time": "Observation-time fields are unavailable (-1). Dates remain the archive’s reporting dates; no hour is reconstructed.",
  "lineage": "NWS record table and ACIS are checks on the federal city record, not two independent observations."
 },
 "quotes": {
  "notebooks": {
   "text": "Abiquiú Notebooks dates 1917.",
   "receipt": "museum-text",
   "locator": "General Remarks; Lynes 1999 transcription of the dating sources",
   "source_span": [
    1695,
    1724
   ],
   "url": "https://access-ok.okeeffemuseum.org/object/7418/"
  },
  "sky": {
   "text": "two chimneys jut into the gray sky.",
   "receipt": "museum-text",
   "locator": "Visual description of CR 126",
   "source_span": [
    1193,
    1228
   ],
   "url": "https://access-ok.okeeffemuseum.org/object/7418/"
  },
  "window": {
   "text": "from her second-floor window",
   "receipt": "marker-text",
   "locator": "PDF p. 56",
   "source_span": [
    102395,
    102423
   ],
   "url": "https://www.thc.texas.gov/public/upload/History_Programs_Committee-July-2021.pdf"
  },
  "letter": {
   "text": "The day couldn’t have been finer",
   "receipt": "timeline-text",
   "locator": "p. 24; p. 54 note 169",
   "event_date": "1917-03-11",
   "archival_letter_date": "1917-03-12",
   "independent_of_artist": false,
   "place": "Palo Duro Canyon; not the house roof",
   "author": "Georgia O’Keeffe to Alfred Stieglitz",
   "original_manuscript_inspected": false,
   "source_span": [
    78668,
    78700
   ],
   "url": "https://www.wtamu.edu/library/okeeffe/timeline.pdf"
  },
  "timeline-move": {
   "text": "She and her sister moved into their rented rooms at the completed Shirley home, February 5",
   "receipt": "timeline-text",
   "locator": "p. 20; p. 54 note 139, citing O’Keeffe to Stieglitz, 4 February 1917, in Greenough’s edition",
   "source_span": [
    64692,
    64782
   ],
   "url": "https://www.wtamu.edu/library/okeeffe/timeline.pdf"
  },
  "postmark": {
   "text": "The letters in AGA are dated according to their postmark, while Greenough dates them according to their time of composition.",
   "receipt": "timeline-text",
   "locator": "p. 49 note 10",
   "source_span": [
    161561,
    161685
   ],
   "url": "https://www.wtamu.edu/library/okeeffe/timeline.pdf"
  },
  "peck-snowfall": {
   "text": "O’Keeffe mentioned an all-day snowfall of Sunday, March 11, in a letter that day to Stieglitz.",
   "receipt": "peck-text",
   "printed_page": 106,
   "locator": "p. 106; note 22 cites O’Keeffe to Stieglitz, 11 March 1917, YCAL MSS 85, Box 82, Folder 1669 (not read here)",
   "source_span": [
    26887,
    26981
   ],
   "url": "https://doi.org/10.1086/526482"
  },
  "peck-speculate": {
   "text": "it is tempting to speculate that the snowfall of March 11 inspired Roof with Snow; perhaps the sketches were painted that day.",
   "receipt": "peck-text",
   "printed_page": 106,
   "locator": "p. 106",
   "source_span": [
    27402,
    27528
   ],
   "url": "https://doi.org/10.1086/526482"
  },
  "peck-never": {
   "text": "never know exactly when O’Keeffe painted Roof with Snow",
   "receipt": "peck-text",
   "printed_page": 106,
   "locator": "p. 106",
   "source_span": [
    27990,
    28045
   ],
   "url": "https://doi.org/10.1086/526482"
  },
  "peck-any": {
   "text": "any of them after mid-February—when the artist moved into the Shirley house—could have been the occasion for this work.",
   "receipt": "peck-text",
   "printed_page": 106,
   "locator": "p. 106",
   "source_span": [
    28155,
    28274
   ],
   "url": "https://doi.org/10.1086/526482"
  },
  "peck-white-room": {
   "text": "I moved into my white room today.",
   "receipt": "peck-text",
   "printed_page": 105,
   "locator": "p. 105; O’Keeffe to Stieglitz, 26 March 1917, as Peck quotes it",
   "source_span": [
    24884,
    24917
   ],
   "url": "https://doi.org/10.1086/526482"
  },
  "peck-move": {
   "text": "Tomorrow—among the forty eleven other things I have to do—we are going to move.",
   "receipt": "peck-text",
   "printed_page": 109,
   "locator": "p. 109 note 19; O’Keeffe to Stieglitz, 17 February 1917, as Peck quotes it",
   "source_span": [
    41624,
    41703
   ],
   "url": "https://doi.org/10.1086/526482"
  },
  "peck-label": {
   "text": "a label in O’Keeffe’s handwriting assigning this date",
   "receipt": "peck-text",
   "printed_page": 109,
   "locator": "p. 109 note 23",
   "source_span": [
    43236,
    43289
   ],
   "url": "https://doi.org/10.1086/526482"
  },
  "peck-november": {
   "text": "did not fall in the town until at least mid-November",
   "receipt": "peck-text",
   "printed_page": 108,
   "locator": "p. 108 note 7",
   "source_span": [
    38005,
    38057
   ],
   "url": "https://doi.org/10.1086/526482"
  }
 },
 "receipts": {
  "city-feb": {
   "title": "NOAA/RCC ACIS, Amarillo City (WBAN 23075), 1–28 February 1917",
   "url": "https://data.rcc-acis.org/StnData?params=%7B%22sid%22%3A%2223075%201%22%2C%22sdate%22%3A%221917-02-01%22%2C%22edate%22%3A%221917-02-28%22%2C%22elems%22%3A%5B%7B%22name%22%3A%22maxt%22%2C%22add%22%3A%22f%2Ct%2Ci%2Cn%2Cs%22%7D%2C%7B%22name%22%3A%22mint%22%2C%22add%22%3A%22f%2Ct%2Ci%2Cn%2Cs%22%7D%2C%7B%22name%22%3A%22pcpn%22%2C%22add%22%3A%22f%2Ct%2Ci%2Cn%2Cs%22%7D%2C%7B%22name%22%3A%22snow%22%2C%22add%22%3A%22f%2Ct%2Ci%2Cn%2Cs%22%7D%2C%7B%22name%22%3A%22snwd%22%2C%22add%22%3A%22f%2Ct%2Ci%2Cn%2Cs%22%7D%5D%2C%22meta%22%3A%22name%2Cll%2Csids%22%7D",
   "sha256": "33e977dce9d1df78b1376ce9314afa52c1300b561a298d58dbbe1ccc58bb5023",
   "retrieved_at": "2026-10-17",
   "license": "U.S. government weather observations; public RCC ACIS service",
   "note": "Same request shape as the March file. 18–28 February are in the tested window; 1–17 February are reported separately as before Peck’s move date."
  },
  "city": {
   "title": "NOAA/RCC ACIS, Amarillo City (WBAN 23075), 1–31 March 1917",
   "url": "https://data.rcc-acis.org/StnData?params=%7B%22sid%22%3A%2223075%201%22%2C%22sdate%22%3A%221917-03-01%22%2C%22edate%22%3A%221917-03-31%22%2C%22elems%22%3A%5B%7B%22name%22%3A%22maxt%22%2C%22add%22%3A%22f%2Ct%2Ci%2Cn%2Cs%22%7D%2C%7B%22name%22%3A%22mint%22%2C%22add%22%3A%22f%2Ct%2Ci%2Cn%2Cs%22%7D%2C%7B%22name%22%3A%22pcpn%22%2C%22add%22%3A%22f%2Ct%2Ci%2Cn%2Cs%22%7D%2C%7B%22name%22%3A%22snow%22%2C%22add%22%3A%22f%2Ct%2Ci%2Cn%2Cs%22%7D%2C%7B%22name%22%3A%22snwd%22%2C%22add%22%3A%22f%2Ct%2Ci%2Cn%2Cs%22%7D%5D%2C%22meta%22%3A%22name%2Cll%2Csids%22%7D",
   "sha256": "ee70285a1f936aaade7ec13531894be49d1450f8865f4f273cb38c5398841881",
   "retrieved_at": "2026-10-15",
   "license": "U.S. government weather observations; public RCC ACIS service",
   "note": "Daily maxt, mint, pcpn, snow, snwd; flags, observation time, station ID, network and source flag retained."
  },
  "city-apr": {
   "title": "NOAA/RCC ACIS, Amarillo City (WBAN 23075), 1–30 April 1917",
   "url": "https://data.rcc-acis.org/StnData?params=%7B%22sid%22%3A%2223075%201%22%2C%22sdate%22%3A%221917-04-01%22%2C%22edate%22%3A%221917-04-30%22%2C%22elems%22%3A%5B%7B%22name%22%3A%22maxt%22%2C%22add%22%3A%22f%2Ct%2Ci%2Cn%2Cs%22%7D%2C%7B%22name%22%3A%22mint%22%2C%22add%22%3A%22f%2Ct%2Ci%2Cn%2Cs%22%7D%2C%7B%22name%22%3A%22pcpn%22%2C%22add%22%3A%22f%2Ct%2Ci%2Cn%2Cs%22%7D%2C%7B%22name%22%3A%22snow%22%2C%22add%22%3A%22f%2Ct%2Ci%2Cn%2Cs%22%7D%2C%7B%22name%22%3A%22snwd%22%2C%22add%22%3A%22f%2Ct%2Ci%2Cn%2Cs%22%7D%5D%2C%22meta%22%3A%22name%2Cll%2Csids%22%7D",
   "sha256": "63c414e29bf36f34fef24d0cc9fd736564cdfbb512cc5e82802084a6924ff29f",
   "retrieved_at": "2026-10-17",
   "license": "U.S. government weather observations; public RCC ACIS service",
   "note": "Same request shape as the March file. Closes the tested window on 30 April."
  },
  "city-meta": {
   "title": "RCC ACIS station metadata, WBAN 23075",
   "url": "https://data.rcc-acis.org/StnMeta?params=%7B%22sids%22%3A%2223075%201%22%2C%22meta%22%3A%22name%2Cll%2Csids%2Cvalid_daterange%22%2C%22elems%22%3A%5B%22maxt%22%2C%22mint%22%2C%22pcpn%22%2C%22snow%22%2C%22snwd%22%5D%7D",
   "sha256": "0b7057d266b5d3661f8f080a22a2d488b1cecd3038ce97abd86469def691d7ba",
   "retrieved_at": "2026-10-15",
   "license": "U.S. government station metadata via RCC ACIS",
   "note": "Coordinates are an archive station reference; exact 1917 instrument exposure is not established."
  },
  "threads": {
   "title": "NOAA/RCC ThreadEx, station-thread history",
   "url": "https://threadex.rcc-acis.org/data/threads_dict.json",
   "sha256": "7cbceb63832be4b5ca53cce76a6dd713349f58b8965142d20006bed1e9c7b85b",
   "retrieved_at": "2026-10-15",
   "license": "Public NOAA/RCC station metadata",
   "note": "Amarillo: city WBAN 23075 through March 1941, then airport. No threaded series is used for the calculation."
  },
  "acis-format": {
   "title": "RCC ACIS Web Services documentation",
   "url": "https://www.rcc-acis.org/ACISWSdoc.html",
   "sha256": "d8a86b4e4370c99586e8912b1b48e73192bc266457fc4a00c4fb440102a77311",
   "retrieved_at": "2026-10-15",
   "license": "Public technical documentation; short factual attribution",
   "note": "Tables 3 and 7; missing M, trace T, accumulated A; imperial units; source network 56 = CRB."
  },
  "nws-records": {
   "title": "National Weather Service, Amarillo daily records",
   "url": "https://www.weather.gov/ama/amarillo_daily_records",
   "sha256": "24ea858ea17bf7c09c345fde1aa6d6d4abe399e3ec2d8d229cc23a7e9eeba880",
   "retrieved_at": "2026-10-15",
   "license": "U.S. government work",
   "note": "March table, day 3 snowfall; table last updated 31 July 2020. Cross-check of the same observation lineage, not an independent witness."
  },
  "nws-history": {
   "title": "National Weather Service, Amarillo station history",
   "url": "https://www.weather.gov/ama/history",
   "sha256": "2e892b0c4ebca1c0cd2fbb40d61c930c9f484a9e5d318533e2ae866c4d27b2f8",
   "retrieved_at": "2026-10-15",
   "license": "U.S. government work",
   "note": "Downtown office opened at Taylor and Seventh in 1903; moved to the air terminal in April 1941."
  },
  "museum": {
   "title": "Georgia O’Keeffe Museum, Access O’Keeffe: Roof with Snow, CR 126",
   "url": "https://access-ok.okeeffemuseum.org/object/7418/",
   "sha256": "ab154ac52f928d6d04cfbff3e0509ffe32267b78418f3b01e43d85a546345010",
   "retrieved_at": "2026-10-15",
   "license": "Copyright retained; factual metadata and short attributed text only; no image reused",
   "note": "Record supplied/verified with Amarillo Museum of Art. CR 126 is the catalogue number; L.2016.8.3 is not asserted to be the holder accession."
  },
  "museum-text": {
   "title": "Text extraction of Access O’Keeffe, CR 126",
   "url": "https://access-ok.okeeffemuseum.org/object/7418/",
   "sha256": "2465d3b06fa912f5942a737d3506be53a5935a263c182ee5411a51a3e8b3632e",
   "retrieved_at": "2026-10-15",
   "license": "Copyright retained; short excerpts only",
   "note": "HTMLParser text extraction, whitespace normalized; derivative of museum receipt."
  },
  "holder": {
   "title": "Amarillo Museum of Art, collection page",
   "url": "https://www.amoa.org/our-collection",
   "sha256": "44f62a474c026bdafad3f0aecb503d34299de7da334c281369a27cb1d23ba021",
   "retrieved_at": "2026-10-15",
   "license": "Copyright retained; factual attribution; no image reused",
   "note": "Holder link; collection-level page, not an individual Roof with Snow record."
  },
  "marker": {
   "title": "Texas Historical Commission, July 2021 History Programs Committee packet",
   "url": "https://www.thc.texas.gov/public/upload/History_Programs_Committee-July-2021.pdf",
   "sha256": "df2bd270bc17619aad8b8c1412d287a5c43a2e99561bdb2490cf14740b33b827",
   "retrieved_at": "2026-10-15",
   "license": "State text; brief quotation and factual attribution; no image republished",
   "note": "PDF p. 56, Roof with Snow / Kimbrough House, 2000 5th Avenue. Marker text dated 2020, edited 2021."
  },
  "marker-text": {
   "title": "Text extraction of the Texas Historical Commission packet",
   "url": "https://www.thc.texas.gov/public/upload/History_Programs_Committee-July-2021.pdf",
   "sha256": "0b9e53e35ccb8fc673a664aaa63c89762de8687365b00098c3be80804c94c09d",
   "retrieved_at": "2026-10-15",
   "license": "State text; brief quotation and factual attribution",
   "note": "PDF p. 56 rendered and inspected; derivative of marker receipt."
  },
  "timeline": {
   "title": "Amy M. Von Lintel, Georgia O’Keeffe in the Texas Panhandle: A Timeline (2014)",
   "url": "https://www.wtamu.edu/library/okeeffe/timeline.pdf",
   "sha256": "a28f708d446af752f180869e886db031e808ac0ba0ff85dffd715525a63f09d9",
   "retrieved_at": "2026-10-15",
   "license": "Copyright retained; university-provided research PDF; short quotation only",
   "note": "PDF/printed p. 20 and p. 54 note 139 (move date); p. 24 and p. 54 note 169 (fine-day letter); p. 49 note 10 (letter dating). Original letters not inspected."
  },
  "timeline-text": {
   "title": "Text extraction of Von Lintel’s timeline",
   "url": "https://www.wtamu.edu/library/okeeffe/timeline.pdf",
   "sha256": "df4c2a595658f90a5a2a953612a664cdecea50abc933d0d6c299a1b3bd8fb4d5",
   "retrieved_at": "2026-10-15",
   "license": "Copyright retained; short quotation only",
   "note": "Whitespace-normalized PyMuPDF extraction. Relevant letter passage and note rendered and inspected; derivative of timeline receipt."
  },
  "peck": {
   "title": "H. Daniel Peck, “The House across the Street: Georgia O’Keeffe’s Roof with Snow,” American Art 21, no. 3 (Fall 2007): 98–109",
   "url": "https://doi.org/10.1086/526482",
   "sha256": "cd05f7247bae7ed1dd2059949f06a78898bd9cfd5e2fefd39ab518892ea8fd13",
   "retrieved_at": "2026-10-17",
   "license": "Copyrighted article (JSTOR copy); short quotations with page numbers only; not republished",
   "note": "Printed pp. 98–109 are PDF pp. 2–13. Quoted passages were read on the rendered pages 105, 106, 108 and 109. The letters Peck cites were not read."
  },
  "peck-text": {
   "title": "Text extraction of Peck (2007)",
   "url": "https://doi.org/10.1086/526482",
   "sha256": "f092cc9df74065551c489665fbc6f6002169344a5c21870352b7073c0aa61bb6",
   "retrieved_at": "2026-10-17",
   "license": "Copyrighted text; short quotations only; not republished",
   "note": "pdftotext 26.04, default reading order, one block per PDF page, whitespace normalized; derivative of the article receipt."
  },
  "peck-metadata": {
   "title": "Crossref publisher-deposited metadata for H. Daniel Peck, The House across the Street (2007)",
   "url": "https://api.crossref.org/works/10.1086/526482",
   "sha256": "e9d7d607b124b35073937f7d4affc6ad55e15748f1aca43a6014960e2ce0d372",
   "retrieved_at": "2026-10-15",
   "license": "Bibliographic metadata only",
   "note": "American Art 21(3), pp. 98–109. Checks the citation of the article receipt."
  },
  "place": {
   "title": "OpenStreetMap Nominatim, 2000 5th Avenue, Canyon, Texas",
   "url": "https://nominatim.openstreetmap.org/search?q=2000+5th+Avenue%2C+Canyon%2C+Texas&format=json&limit=1",
   "sha256": "734f1e1c3f3b693ea62f1ccd697d7766a98159b2aafea0758178e2cb397c9984",
   "retrieved_at": "2026-10-15",
   "license": "ODbL 1.0, © OpenStreetMap contributors",
   "note": "Present-day address geocode, OSM way 21193949. Contextual location, not a survey of the 1917 easel."
  }
 }
}