Auden performed charitable acts, sometimes in public (as in his 1935 marriage of convenience to Erika Mann, but, especially in later years, more often in private. He was embarrassed if they were publicly revealed, as when his gift to his friend Dorothy Day for the Catholic Worker movement was reported on the front page of The New York Times in 1956. United States and Europe, 1939–1973 Auden and Isherwood sailed to New York City in January 1939, entering on temporary visas. Their departure from Britain was later seen by many as a betrayal, and Auden's reputation suffered. In April 1939, Isherwood moved to California, and he and Auden saw each other only intermittently in later years. Around this time, Auden met the poet Chester Kallman, who became his lover for the next two years (Auden described their relation as a "marriage" that began with a cross-country "honeymoon" journey). In 1941, Kallman ended their sexual relationship because he could not accept Auden's insistence on mutual fidelity, but he and Auden remained companions for the rest of Auden's life, sharing houses and apartments from 1953 until Auden's death. Auden dedicated both editions of his collected poetry (1945/50 and 1966) to Isherwood and Kallman. In 1940–41, Auden lived in a house at 7 Middagh Street in Brooklyn Heights, that he shared with Carson McCullers, Benjamin Britten, and others, which became a famous centre of artistic life, nicknamed "February House". In 1940, Auden joined the Episcopal Church, returning to the Anglican Communion he had abandoned at fifteen. His reconversion was influenced partly by what he called the "sainthood" of Charles Williams, whom he had met in 1937, and partly by reading Søren Kierkegaard and Reinhold Niebuhr; his existential, this-worldly Christianity became a central element in his life. After Britain declared war on Germany in September 1939, Auden told the British embassy in Washington that he would return to the UK if needed. He was told that, among those his age (32), only qualified personnel were needed. In 1941–42 he taught English at the University of Michigan. He was called for the draft in the United States Army in August 1942, but was rejected on medical grounds. He had been awarded a Guggenheim Fellowship for 1942–43 but did not use it, choosing instead to teach at Swarthmore College in 1942–45. In mid-1945, after the end of World War II in Europe, he was in Germany