Keywords: Comdr. A.F. Birch, numbering LB (Little Boy) unit L-11, before loading on trailer in Assembly Bldg. ^1. Unit L-11 was... - NARA - 519395.tif Scope and content General notes 519395 Local identifier 77-BT-172 War Department Office of the Chief of Engineers Manhattan Engineer District 08/16/1942 - 08/15/1947 Still Picture Records Section Special Media Archives Services Division NWCS-S National Archives at College Park 8601 Adelphi Road College Park MD 20740-6001 08/1945 Record group Record Group 77 Records of the Office of the Chief of Engineers 1789 - 1999 Record group ARC 406 Photographic Prints of Atomic Bomb Preparations at Tinian Island compiled 1945 - 1945 Series ARC 519392 File unit File unit ARC Variant control numbers NAIL Control Number NWDNS-77-BT-172 yes Other versions NARA-cooperation PD-USGov Little Boy |