sentences:  Considered one of the best preachers of his era, whose sermons were syndicated for distribution by tape and radio networks for decades, Shoemaker served as the rector of Calvary Episcopal Church in New York City, the United States headquarters of the Oxford Group during the 1930s, and later at Calvary Episcopal Church in Pittsburgh, Pennsylvania.Sam Shoemaker's interdenominational focus and the Oxford Group were significant influences for the founders of Alcoholics Anonymous.Bill Wilson attended Oxford Group meetings at Calvary Church, and Sam Shoemaker also helped start an Oxford Group chapter in Akron, Ohio, where Dr. Bob Smith became involved.