Public domain
A huge motor for a North American B-25 bomber is given a last check in the motor department before moving to final assembly. Other motors are Allisons for P-51
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineA huge motor for a North American B-25 bomber is given a last check in the motor department before moving to final assembly. Other motors are Allisons for P-51. 1942-01-01. Palmer, Alfred T.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.