Dr. Leon Orris Jacobson (December 16, 1911 – September 20, 1992), worked at the University of Chicago as a researcher and educator who made tremendous contributions to radiology and hematology, with major impacts on chemotherapy and radiotherapy. He was a recipient of the Roughrider award in 1976. Leon Jacobson died on September 18, 1992.
Source Citation "Jacobson, Leon Orris." Current Biography Feb. 1993: 59. Expanded Academic ASAP. Web. 4 May. 2011.
Goldwasser, Eugene "Jake. Leon O. Jacobson, M.D. The life and work of a distinguished medical scientist," Science History Publications, 2006. ISBN 0-88135-279-9.