John Wanamaker (1838-1922). Philadelphia merchant, famed for the department stores bearing his name. In 1861 he opened his first store. He built his "new kind of store" here in 1876 and implemented new concepts including the one-price system & money-back guarantee. Active in public life, he built schools, churches, and missions in this and other nations. As U.S. Postmaster General, 1889-93, he fostered rural free delivery and introduced the commemorative stamp.