Contains many letters, speeches, and articles written by Clark. Many are letters written to his family members in the holiday season, and the speeches and articles were often given at Brigham Young University-sponsored events or published in church magazines such as the Ensign. The letters were compiled by Clark's daugher, transcribed, and put in chronological order following his death, dated 1956 to 1977.

Contains the scrapbooks and photographs of Clark. The scrapbooks detail the events of his life beginning in 1902 and ending in 1984. The photographs, newsclippings, letters, correspondence, and journal entries making up the scrapbooks were organized into Early Years, 1929-1944, Temple Years, Mission to Sri Lanka, and Final Years, 1902 to 1985. Also includes negatives.