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Underwood & Underwood, Washington (D.C.)
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United States. War Department. Air Service Division of Military Aeronautics
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Unknown
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Unknown Family
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Urlin & Pfeifer, Columbus (Ohio)
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U.S. Air Service
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U.S. Army Air Corps
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U.S. Army Air Corps, 2nd Photo Section, Langley Field (Va.)
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U.S. Army Air Corps, Material Division
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U.S. Army Air Forces
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U.S. Army Air Forces, Air Material Command
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U.S. Army Air Forces, Service Command
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U.S. Army Air Forces, Training Command
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Varney, Chicago (Ill.)
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Veghte, James J.
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Verlag Von Gust. Liersch and Co., Berlin
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Von F. Gollas and Co., Strassberg
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Von Webern and Weller, Dayton (Ohio)
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Wald, Charles
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Weatherly, Betty
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