{
  "file": "photo-0441.jpg",
  "subject": "Atomic Energy Commission (photographer unidentified, U.S. Air Force personnel). Family of Man Master Checklist plate #456, Section 40 Bomb, Marshall Islands, 96 x 120 cm. Checklist credits: Atomic Energy Commission (commissioner and photographer credit), no nationality printed. Subject: Operation Ivy, Mike shot — first U.S. thermonuclear test, mushroom cloud aerial view, Enewetak Atoll, Marshall Islands, 1 November 1952. NARA item 558592 (Record Group 434, General Records of the Department of Energy), Local ID: 434-RF-12A(1).",
  "source": "National Archives and Records Administration (NARA) — Record Group 434, General Records of the Department of Energy. Digitized via Wikimedia Commons (File:Operation_Ivy,_Mike_cloud,_aerial_view_-_NARA_-_558592.tif).",
  "source_url": "https://commons.wikimedia.org/wiki/File:Operation_Ivy,_Mike_cloud,_aerial_view_-_NARA_-_558592.tif",
  "source_url_direct": "https://upload.wikimedia.org/wikipedia/commons/thumb/5/54/Operation_Ivy%2C_Mike_cloud%2C_aerial_view_-_NARA_-_558592.tif/1920px-Operation_Ivy%2C_Mike_cloud%2C_aerial_view_-_NARA_-_558592.tif.jpg",
  "license": "PD-USGov",
  "license_url": "https://commons.wikimedia.org/wiki/Template:PD-USGov",
  "rights_holder": "U.S. Air Force / Atomic Energy Commission. Photograph made by unidentified USAF personnel in the course of official duties. Public domain as a work of the U.S. federal government. NARA rights statement: 'No Copyright - United States.'",
  "attribution": "USAF / Atomic Energy Commission, 'Operation Ivy, Mike cloud, aerial view.' 1 November 1952. NARA item 558592, Record Group 434 (General Records of the Department of Energy), via Wikimedia Commons. Rights: PD-USGov (No Copyright - United States).",
  "date_taken": "1952-11-01",
  "url_verified_at": "2026-05-12",
  "basis": "public_domain",
  "plate_level_note": "The Family of Man Master Checklist plate #456 (Section 40 BOMB, the only plate in that section) credits the Atomic Energy Commission as sole institutional credit. O'Brian (2008, 'The Nuclear Family of Man', History News Network — fetched via browser MCP 2026-05-12; see .scratch/loc-photo-0441-source-research.html) confirms that the MoMA original (January-May 1955) used 'a six-by-eight foot color transparency of test Mike, a thermonuclear explosion from Operation Ivy at Enewetak Atoll.' The NARA 558592 image is the aerial B&W version of the Ivy Mike cloud — consistent with the AEC commissioner credit and the Mike identification from O'Brian, but this specific NARA item has NOT been confirmed in a Tier-1 source as the actual touring-exhibition print. The Wikimedia Commons file page was fetched via browser MCP 2026-05-12; see .scratch/loc-photo-0441.html. Image resized from 1920x1523 px to max 1400 px using sips -Z 1400."
}