The Ames mss., 1840-1983 consist of the papers, correspondence, photographs, memorabilia and collected items of the Sally Mundy, 1886-1963, her son Richard Ames 1905-1984, and her second husband, author Talbot Mundy 1879-1940.
The Amfiteatrov mss., 1890-1948, consists of the correspondence and writings of journalist and playwright Aleksandr Valentinovich Amfiteatrov, 1862-1938.
The Anna Karenina mss., 1935, consists of papers relating to the motion picture Anna Karenina, a Metro-Goldwyn-Mayer release directed by Clarence Brown, 1890–1987, and written by Clemence Dane, 1888–1965, and Salka Viertel, 1889–1978.
The Čapek mss., circa 1900-1937, consist of letters, drawings, et cetera, of or relating to Czech author Karel Čapek, 1890-1938, acquired at various times from various sources.
The Applegate mss., 1863-1929, consists mainly of correspondence between John S. Applegate, 1823-1867, and his wife Elizabeth S. (Lynch) Applegate, 1823-1890, during the Civil War, and letters from Elizabeth S. Applegate to their daughter Alma Etta (Applegate) White, 1855-1930.
The Appleton-Century mss., 1846-1962, consists of the office files of the publishing company, its two predecessors, D. Appleton & Co., and the Century Co., and to a small extent its successor, Appleton-Century Crofts, Inc.
The Archer mss., 1838-1940, consists of notes on lectures and papers written by Calvin Beza Kell Archer, 1822-1947, while he was a student at Princeton Seminary (now Hanover College) and Indiana University, 1838-1844.
The Arden, C. mss., 1938-1940, consists of twenty-eight letters from writer Edward Frederic Benson, 1867-1940, to fellow writer Lily Clive Nutt, 1888-1973, also known as Clive Arden.