Date: | 1943 |
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Description: | A man using a microscope to match a ball bearing for an aircraft torpedo at an International Harvester factory. The original caption reads: "A powerful mic... |
Date: | 01 24 1930 |
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Description: | View of two factory men at work desks at a plant that assembled Comet aircraft engines. They are sitting on wooden stools between Korn scales in a narrow b... |
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