Cesar Estrada Chavez (1927-93) founded the United Farm Workers of America, AFL-CIO. Chavez used nonviolent tactics like fasts, boycotts, strikes, and pilgrimages to achieve protections and rights for hundreds of thousands of farm workers.
Estimate: $50 - $100
Auction : Stamps, Covers & Signatures: A Worldwide Philatelic and Autograph Sale — Cool Stuff Auctions