1. Application for Kansas State Licensure.
2. Official Register of Harvard University Volume IV, Number 38, November 19, 1907.
3. ?An Account of the University of Kansas School of Medicine? by Ralph H. Major M.D., Kansas, 1968.
4. Kansas City Times, January 2, 1948.
5. The Wahl Years at the the University of Kansas Medical Center 1919?1948? by Miss Helen Sim, Kansas 1983.