He was appointed the seventeenth Poet Laureate Consultant in Poetry to the United States Library of Congress in 1965. With Cyril Connolly and Peter Watson Spender co-founded Horizon magazine and served as its editor from 1939 to 1941. He was editor of Encounter magazine from 1953 to 1966, but resigned after it emerged that the Congress for Cultural Freedom, which published the magazine, was being covertly funded by the CIA.[ Spender always insisted that he was unaware of the ultimate source of Encounter's funds. Spender taught at various American institutions, accepting the Elliston Chair of Poetry at the University of Cincinnati in 1954. In 1961 he became professor of rhetoric at Gresham College, London. He helped found the magazine Index on Censorship, he was involved in the founding of the Poetry Book Society, and he did work for UNESCO.[ Spender was Professor of English at University College, London, 1970–77, and then became Professor Emeritus. Spender was made a Commander of the Order of the British Empire (CBE) at the 1962 Queen's Birthday Honours, and knighted in the 1983 Queen's Birthday Honours. At a ceremony commemorating the 40th Anniversary of the Normandy Invasion, D-day on 6 June 1984, President Ronald Reagan quoted from Spender's poem "The Truly Great" in his remarks: Gentlemen, I look at you and I think of the words of Stephen Spender's poem. You are men who in your "lives fought for life... and left the vivid air signed with your honor."