TLS signed “Jonas E. Salk,” one page, 7.75 x 10.75, University of Pittsburgh School of Medicine letterhead, January 10, 1958. In part: “We have not been able to send photographs to all who have asked…We have no pictures available here but I am quite certain you might be able to obtain one from the National Foundation for Infantile Paralysis.” In fine condition, with a trimmed bottom edge. Pre-certified PSA/DNA.
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