Public domain
Aberdeen Proving Ground, Maryland. Lieutenant Guy H. Drewry, U.S.A. (center), aide-de-camp to Major-General Charles T. Harris, Jr., commanding the Aberdeen Proving Ground, pointing out important features of the eight inch howitzer to Chinese Major-General Dai-Fung King (right) and his aide-de-camp,
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Credit lineAberdeen Proving Ground, Maryland. Lieutenant Guy H. Drewry, U.S.A. (center), aide-de-camp to Major-General Charles T. Harris, Jr., commanding the Aberdeen Proving Ground, pointing out important featu. 1942-01-01. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.