Medical researcher and virologist (1914–1995) best known for his discovery and development of the first safe and effective polio vaccine in 1955. TLS signed “Jonas E. Salk,” one page, 8.5 x 11, University of Pittsburgh letterhead, January 17, 1957. Dr. Salk writes Lawrence Spivak of Meet the Press regarding an appearance on the news program. In part: “I have given a great deal of thought to the opportunity to appear on your program. I can understand full well your desire to have me; however, I am not able to convince myself that this is the very best way to fulfill my public responsibility in connection with the problem of eradicating paralytic poliomyelitis. I have to balance my position very delicately for a considerable time now. It is difficult for me to convey to you the character and nature of the sensibilities involved, but the area all brought to bear when decision of public consequence must be made.” Light wrinkling, a few faint creases, a small hole at the top left edge, and a staple at the top border, otherwise fine condition. Excellent content displaying Salk’s struggle to balance new found fame with his medical research. RRAuction COA.