Date: | 1945 |
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Description: | Original caption reads: "A loaded magazine is mounted on a 20mm cannon in one of the test stands at Hazel Park Firing Range." Frederick Viator is the gunne... |
Date: | 1911 |
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Description: | The photographer J. Robert Taylor posing outdoors with his motorcycle in front of a large cannon. The cannon is mounted on a low pedestal and is enclosed b... |
Date: | 08 08 1950 |
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Description: | Portrait of Professor Joseph Hirschfelder, University of Wisconsin chemist. He also is project director for the U.W. Naval Research Laboratory, member of t... |
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