Geology of the Crust and Mantle, Western U.S.A, by George A. Thompson and Manik K. Talwani, 1964, Box: 6, Folder: 10. Wallace E. Pratt papers, RH MS 870. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/34130 Accessed November 28, 2024.