This lot is closed for bidding. Bidding ended on 12/5/2020
Jonas Salk, virologist and medical researcher credited with developing one of the first polio vaccines, signed this first day cover stamped in tribute to Army Surgeon Dr. Mary Walker, in black ballpoint pen. 6.5 X 3.5. Very good condition. Comes with a James Spence Authentication (JSA) and a Gotta Have Rock and Roll Certificate of Authenticity.