Developmental Sciences: A. Cosmic Evolution - Robert Jastrow, B. Dawn in IONIA - 7th and 6th B.C. Civilization from China to Greece (The Times Literary Supplement, Friday April 21, 1961), Box: 1, Folder: 29. Wallace E. Pratt papers, RH MS 870. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/33939 Accessed February 26, 2025.