Public domain
ALLIED AIRCRAFT. DEMONSTRATION AT POLO GROUNDS. COL. CHARLES E. LEE, BRITISH AVIATOR, WITH AVRO TRAINING PLANE DESIGNED BY A.V. ROE OF ENGLAND
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Credit lineALLIED AIRCRAFT. DEMONSTRATION AT POLO GROUNDS. COL. CHARLES E. LEE, BRITISH AVIATOR, WITH AVRO TRAINING PLANE DESIGNED BY A.V. ROE OF ENGLAND. 1917-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
