Handling and Releasing Homing Pigeons from Aircraft In Flight - Restrictions Page
US Army Air Forces technical manual, "Handling and Releasing Homing Pigeons from Aircraft In Flight," T.O. 01-1-120, August 1, 1943. Page explains the "restricted" classification of the document. (NASM-9A16685-003)
Source:
National Air and Space Museum Archives, Smithsonian Institution
