1953 Frankfort (Main) Germany, To Prof[essor] Hall from Albert Sobel, unidentified men (2), March 1950 Matamoros Tamoulifas [photographs], Box: 2, Folder: 53. Personal papers of E. Raymond Hall, PP 167. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/265694 Accessed June 14, 2024.