Major Robert Mearns Yerkes, a personnel supervisor for the Committee on Classification of personnel in the army, photographed in January 1919. This image was taken during World War One as part of the American military activities. Caption indicates it is for official use only.

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Size: 8549px × 5845px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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