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Hummel, Otto b. August 30, 1890; Argentine German; Married; Machinist; Family Luzerne, Switzerland; CP of Argentina; Left from the US; Arrived in Spain May 4, 1937; Worked in a German military hospital; From 1945 lived in the Soviet Union and worked as a teacher; d. March 2, 1969.
Sources: Cadre; RGASPI Fond 545, Opis 6, Delo 1477; SAPMO; Swiss http://www.spanienfreiwillige.ch/handbuch.html#h.