 He then took a job at the Shipley School in Bryn Mawr, Pennsylvania, where he was assistant principal from 1937 to 1940, then principal until 1944.He then joined Harper's Magazine as an assistant editor and became managing editor in 1947, a position he would hold for the next twenty years.In 1934, he married Mildred Akin (died 1999), who was a Vassar graduate, the step-daughter of artist Henry Ives Cobb, Jr. (1883–1974) and a granddaughter of George W. Wickersham (1858–1936), U.S. Attorney General under William Howard Taft.