Who Are They? - Prepared at the Request of the Committee on Un-American Activities by the Legislative Reference Service of the Library of Congress - Part 4 - Walter Ulbricht and Janos Kadar, 1957/09, PRJO 43/132, Box: PRJO 43. Richard J. O'Melia Collection, RJO. University of Notre Dame Archives. https://archivesspace.library.nd.edu/repositories/2/archival_objects/1757660 Accessed November 13, 2024.