Public domain
MARINE CORPS, U.S.N. MACHINE GUN UNIT DEMONSTRATION AT BALL PARK. DANIELS AND GEN. BARNETT
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
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Credit lineMARINE CORPS, U.S.N. MACHINE GUN UNIT DEMONSTRATION AT BALL PARK. DANIELS AND GEN. BARNETT. 1917-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.