Correspondence, audio tapes, hymn and poem manuscripts, lantern slides, phonograph records, negatives, photographs, tracts, posters, audio tapes, clippings, scrapbooks, etc., related to Oswald J. Smith's career as an evangelist, pastor, author and editor, hymn writer and poet, colporteur, and promoter of missions involvement. Includes material on the Smith family; his evangelistic ministry, particularly in Canada; the North American hymn publishing industry, particularly correspondence with other composers and lyricists; and his pastoring the Dale Presbyterian Church, Toronto Alliance Tabernacle, and Gospel Tabernacle of Los Angeles, the Cosmopolitan Tabernacle (in Toronto), Toronto Gospel Tabernacle; Peoples Church of Toronto; promotion of missionary enterprises. Persons featured include B.D. Ackley, Charles Alexander, Merrill Dunlop, Stuart Hamblen, Homer Hammontree, Redd Harper, Louis Paul Lehman, Harry Dixon Loes, Paul Rader, R.A. Torrey and Smith's family members, including his wife, Daisy, and son, Paul.