Professor Samuel Marinus Zwemer (1867-1952), nicknamed The Apostle to Islam, was an American missionary, traveller, and scholar. After being ordained to the Reformed Church ministry, he was a missionary at Busrah, Bahrein, and at other locations in Arabia from 1891 to 1905. He also travelled widely in Asia Minor, and he was elected a fellow of the Royal Geographical Society of London. In 1929 he was appointed Professor of Missions and Professor of the History of Religion at the Princeton Theological Seminary where he taught until 1951. He was famously turned down by the American Missionary Society which resulted in him going overseas alone. He edited the publication The Moslem World for many years. He was influential in mobilizing many Christians to go into missionary work in Islamic Countries. Amy E. Zwemer, nee Wilkes (?-1937) was an American missionary, a member of the Arabian Mission where she met and married fellow missionary Samuel Marinus Zwemer on May 18, 1896. She wrote Two Young Arabs: The Travels of Noorah and Jameel (1926) and co-authored a number of books with her husband including: Topsy-Turvy Land (1902), and Moslem Women (1926).