Operation Doorstep, Civil Defense Study, 1953 - Stock Image - C033/4519 - Science Photo Library

Basement lean-to shelter with mannequins. Operation Doorstep was a civil defense study conducted by the Federal Civil Defense Administration in conjunction with Upshot-Knothole Annie. NNSA/Nevada Field Office/SCIENCE PHOTO LIBRARY

File:Operation Doorstep - Destruction of house n°1 - Frame 3.jpg - Wikimedia Commons

Operation Doorstep (1953) – The Public Domain Review

Depression, War, & Cold War Mapping History at Illinois

Eyes to the Skies! - Civil Defense Volunteers Ensured Safety and Posterity

24 Unsettling Before And After Photos From Operation Doorstep

Atom bomb test site hi-res stock photography and images - Page 3 - Alamy

Civil War Glass Negatives and Related Prints - Background and Scope of the Collection - Prints & Photographs Online Catalog (Library of Congress)

24 Unsettling Before And After Photos From Operation Doorstep

Operation Doorstep, Civil Defense Study, 1953 Stock Photo - Alamy

File:The Burns Archive, Shooting Soldiers, Civil War Medical Photography by Dr. R.B. Bontecou.jpg - Wikipedia