Date: | 1936 |
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Description: | Engineering photograph of an experimental McCormick-Deering tractor with wheel covers. The tractor was apparently designed for use by the U.S. military. Th... |
Date: | 1936 |
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Description: | Dr. Edgar End, Max Gene Nohl and John Craig (the "human guinea pigs") are shown inside the decompression chamber located at the Milwaukee County Emergency ... |
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