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DescriptionWilliam N. Cogan.jpg
English: NH 91842 - William N. Cogan, DDS was the first dental officer to go on active duty, 30 October 1912. He was appointed acting assistant dental surgeon 24 October 1912 to participate as a member of the first examining board to select dental officers to serve in the U.S. Navy.
This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.
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Uploaded a work by United States Navy from https://www.history.navy.mil/content/history/nhhc/our-collections/photography/alphabetical---donations0/d/s-181-dental-corps-photograph-collection.html with UploadWizard
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