"Security analysis," addresses by G. A. Wagner and D. H. Barran to the New York Society of Security Analysts, March 25, 1970, Box: 20, Folder: 15. Charles Heller papers, RH MS 314. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/492920 Accessed May 02, 2024.