 He was later named Curator of the American Relief Administration Archives (1924–1934), Secretary of the Directors (1925–1930), Director of the Russian Revolution Institute (1929–1940), Vice-Chairman of the Directors (1931–1943), Chairman of the Directors (1943–1952), and Chairman of the Advisory Board (1952–1955).After World War II he served the United Nations in various advisory capacities.He retired from Stanford in 1955, but went on to serve as a visiting professor at the University of California at Berkeley, San Francisco State College, Columbia University, and Tokyo University.