Wright R-2600 Twin Cyclone radial engine assembly line. c. 1942.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...g_fullsize.jpg
Previously:
C-87 Liberator being assembled in 1942 - photo
Douglas XB-19 under construction - photo and video
Handley Page Heyford bomber - photos
A look inside a Boeing B-17 Flying Fortress - GIF
Vickers Wellington bomber - photos
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