"Mechanical Training Detachments at Wilham Hood Dunwoody Institute in Minneapolis, Minnesota. Photograph taken on December 28, 1918. The image shows a class focusing on meter work. The photo is marked "For Official use only." Photographer: Unknown."

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Size: 8527px × 5741px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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