Public domain
AVIATION, NAVY. COMMODORE J.C. GILLMORE IN CURTISS HEADLESS PLANE, DUAL CONTROL, AT COLLEGE PARK ARMY FLYING FIELD, LT. MILLING, RIGHT
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Credit lineAVIATION, NAVY. COMMODORE J.C. GILLMORE IN CURTISS HEADLESS PLANE, DUAL CONTROL, AT COLLEGE PARK ARMY FLYING FIELD, LT. MILLING, RIGHT. 1912-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.