1. (Memoirs). The philosophy of chiropractic and reminiscience of its early development and growth;Howard;J Chiropr Humanities,1998
2. Introduction to Beideman's History of NCC;Gibbons,1995
3. Encyclopedia of chiropractic (The Howard System);Howard,1908
4. Various Catalogues of the National School of Chiropractic cited in the narrative.
5. In the making of a profession The National College of Chiropractic 1906-1981;Beideman,1995