Vultee BT-13 Valiant assembly line, c. 1942.

Fullsize image: https://diqn32j8nouaz.cloudfront.net...e_fullsize.jpg



Previously:

B-25 bomber engine assembly line - photo
C-87 Liberator being assembled in 1942 - photo
Douglas XB-19 under construction - photo and video
Vickers Wellington bomber - photos
Rosie the Riveter working on an aircraft engine - photo