{
  "title": "Cyclorama Building, Gettysburg \u2014 first and second floor plans",
  "survey": "HABS PA-6709",
  "sheet": "4 of 24",
  "file": "cyclorama-floor-plans-habs-pa-6709-sheet-4.pdf",
  "download_url": "https://www.usmodernist.org/m66/cyclorama/habs/images/habs04a.pdf",
  "download_catalog": "https://www.usmodernist.org/m66/cyclorama/habs/index.html",
  "primary_catalog": "https://www.loc.gov/pictures/item/pa3988/",
  "primary_rights": "https://www.nps.gov/subjects/heritagedocumentation/collection.htm",
  "additional_rights": "https://wwws.loc.gov/rr/print/res/114_habs.html",
  "rights": "Public domain HABS measured drawing produced for the U.S. Government; PDF downloaded from USModernist mirror. Not a Creative Commons license.",
  "credit": "Library of Congress, Prints & Photographs Division, HABS PA-6709, sheet 4 of 24; National Park Service, Historic American Buildings Survey.",
  "bytes": 675723,
  "sha256": "f75301c338d80bc2f428dede7c54d4799def2c2726cea8bed50c3e85d5f6305a",
  "pages": 1,
  "page_size_points": [
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  "pdf_rotation": 0,
  "content": "Scanned/raster linework, 3 embedded images, no extracted vector paths. First and second floor plan, printed graphic scale and north arrow.",
  "suggested_ui": "Rotate 90 degrees clockwise for landscape orientation; crop either floor plan. Use measured graphic scale after zooming, not PDF DPI, for model calibration.",
  "downloaded_utc_date": "2026-09-09"
}