1962 Press Photo Dr. Leon Dmochowski, a professor at Baylor University

Dr. Leon L. Dmochowski, Baylor university professor and a staff member at the M.D. Anderson hospital in Houston, made these observations today at the opening session of the American Association for Cancer Research, southwest section, at the Jung Hotel. Research in the past few years has built up strong evidence that viruses, matter not much bigger than molecules are the cause of cancer.

Photo is dated 1962.

Photo measures 8 x 10.25 inches.