Haus der Polnischen Kultur, Berlin (House of Polish Culture, Berlin), 1958, 1965, 1975-1980, 1985-1987, Box: 2, Folder: 52. Edith Krull collection, MS 345. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/375454 Accessed December 31, 2024.