TLS signed “Jonas E. Salk,” one page, 8.5 x 11, University of Pittsburgh letterhead, December 21, 1955. Letter to Dr. Gabriel Mason. In part: “You were very kind to write and to send to me a copy of your remarks…of an occasion that I regret I had to experience so remotely. If I can voice my personal concern for the world in which I find myself today, it would be to express the hopelessness of trying to extend the fourth dimension. This being so, I have stopped trying to stretch the pattern to fit the cloth.” In fine condition, with intersecting folds (one vertical fold passing through a single letter of the signature). RR Auction COA.
