Correspondence, diaries, articles, clippings, manuscripts, photographs, photo albums, songbooks, lecture and sermon notes, maps, audio tapes, etc. related to the Ian and Helen Anderson's mission work with the Overseas Missionary Fellowship. The materials document their careers in China until 1951, in Taiwan until 1956, and in the Philippines until 1971, and again in Taiwan until 1974. Materials also reflect their work as regional representatives for OMF following their retirement in 1974. Audio tapes and songbooks in this collection include some of the music they used in evangelism.