The David Oman McKay photograph collection consists of four unidentified portraits believed to be of members of the McKay family; two group portraits of LDS missionaries.

Llewelyn Riggs McKay (1904-1975) was a professor at the University of Utah who served as head of the Language Department from 1945 until 1965. His father, David O. McKay, was the ninth president of the Church of Jesus Christ of Latter-Day Saints. This collection contains portraits of Llewelyn McKay, David O. McKay, and photographs of the McKay family. It also contains photographs documenting the mission that Llewelyn McKay served in Germany between 1922 and 1925.