Herman Sommerfeld (center) with other reserve soldiers in military uniform Portraits Men

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Herman Sommerfeld (center) with other soldiers in military uniform Portraits Men

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Herman Sommerfeld, German Jewish World War I pilot, seated in an airplane Portraits Men

Signed by photographer bottom left

Herman Sommerfeld (right) in military uniform with an unidentified soldier Portraits Men

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Herman Sommerfeld with unidentifed men and women on board a ship from Tallin to Helsinki (and on to the United States) Portraits Groups

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Herman Sommerfeld (seated far left) with unidentified injured soldiers in a military hospital Portraits Groups

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Studio portrait of Herman Sommerfeld in military uniform Portraits Men

Handwritten on verso: Zur Erinnerung an meiner ? Zeit, Dein Hermann, Flughafen-Doberitz, Zum austuecken bereit

Herman Sommerfeld (fifth from right) with other soldier recruits; Döberitz, Germany Portraits Men

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Portrait of Herman Sommerfeld (right) with two unidentified pilots of the naval air force; Adlershof bei Berlin Portraits Men

Caption reads: Werftbild Abtl Flugzeugmeisterei Adlershof bei Berlin 1917