“We. The undersigned certify that the men named below were members of the third company of the Lincoln Battalion in Spain and were captured by the Franco forces on the 7th day of September, 1938, on the sector of Corbera. We know these facts to be true as we witnessed the entire affair, having been members of the same unit and barely escaping ourselves after having been completely surrounded. These men are: Irving Rifkin, James Pearce, Jack Arnold, Pat Garafalo, Wilbur Wheeler, Thomas Hardy, Sam Grossner, William Miller, Leonard Holtzclaw.”
Sibling: brother Nathan Roth Grossner (1919-1989).
Sources: Scope of Soviet Activity; Cadre; RGASPI [states captured around September 16]; RGASPI Fond 545, Opis 6, Delo 550, ll. 52 (fiche); USSDA 2:0604, 55:0118; (sworn statement) USSDA 2:0865, 59:0211.
Photographs: Samuel Grossner, Passport Photograph, 1937; and Leon Rosenthal and his assistant Sam Grossner inside their soundtruck 1937.