Operation Crossroads was the name for the series of atmospheric nuclear weapon tests conducted in the summer of 1946 at Bikini Atoll in the Marshall Islands. To commemorate these events, Col. Donald Putt was given a large scrapbook with the photo and documentary history of the Task Group T-2, the group responsible for the overall supervision of the AAF Airborne installation and a large part of the photography. The wooden cover features a painting of an atomic mushroom cloud originating from the task group insignia and was made from airplane veneer.