Correspondence, prayer letters, clippings, photographs, oral history interviews and audio tapes of missionary conference relating to the missionary career of Ruth M. Mellis. Materials document her work among orphans and students in Greece, the Greek Bible Institute, the Greek language, and Greater Europe Mission; oral history interviews describe her childhood, attendance at Wheaton College, work with Near East Relief in Siros, teaching public schools in the St. Louis area, teaching at the Queen's School in Addis Ababa, Ethiopia, the cultures and the churches countries she lived in, and other mission-related topics.