7. "A Groysn dank dir Hitler! (8-6-33)" p. 37—40

7. "A Groysn dank dir Hitler! (8-6-33)" p. 37—40, Box: 1. Samuel Leibowitz Papers, 36332559. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/428003 Accessed September 26, 2026.