Jonas Salk

Authentic Jonas Salk autographed vintage commemorative commemorative First Day of Issue philatelic cover featuring a canceled 13¢ 'United Nations' stamp canceled on May 22, 1970 at the United Nations in New York. Fittingly the cover is hand signed by Jonas Salk the internationally recognized medical researcher and virologist, best known for his discovery and development of the first safe and effective vaccine for polio.