Columbia subject headings:
Atomic bomb--United States--History.
United States. Army. Corps of Engineers. Manhattan District--History.
Harvard subject headings:
Atomic bomb--United States--History
Digital images.
Manhattan Project (U.S.)
United States. Army. Corps of Engineers. Manhattan District
United States. Army. Corps of Engineers. Manhattan District--History.
Princeton subject headings:
Atomic bomb--United States--History.
Manhattan Project (U.S.)
United States. Army. Corps of Engineers. Manhattan District--History.