Fredrick J. Zydek Papers, Archives and Special Collections, Dr. C.C. and Mabel L. Criss Library, University of Nebraska at Omaha.
Fredrick J. Zydek Papers, Archives and Special Collections, Dr. C.C. and Mabel L. Criss Library, University of Nebraska at Omaha. https://archives.nebraska.edu/repositories/4/resources/564 Accessed January 17, 2022.
