This collection consists of one folder of correspondence and greeting cards from the files of Hugh Mercer, Jr., son of Johnny Mercer’s half-brother.

The Johnny and Ginger Mercer Papers contain manuscripts, photographs, sheet music, recordings, printed materials, and memorabilia documenting the early careers (1920s through about 1931) of both Johnny and Ginger Mercer; their courtship and marriage (1930 and 1931); and Johnny Mercer's career as a songwriter, performer, and businessman as it continued after their marriage; Johnny Mercer's work as a lyricist.

The Ober family lived near Johnny Mercer and his family on Lido Isle (Newport Beach, California) in the 1950s and 1960s. The two families became close friends. The collection contains correspondence, photographs, and other printed and manuscript materials, documenting the long relationship between the families, as well as collected material relating to Johnny Mercer, 1976-2000.

Richard A. Whiting was a prominent music composer for Hollywood and Broadway productions from the 1920s-1930s. The Richard A. Whiting Collection, 1896-2006, contains files related to Whiting's life and career as a musical composer including correspondence, photographs, periodicals and sheet music.

Sadie Vimmerstedt, who was a resident of Youngstown, Ohio, wrote a letter to Johnny Mercer in February of 1957 suggesting that Mercer write a song entitled "When Somebody Breaks Your Heart." Mercer wrote the song, ultimately sharing authorship with her on a 50/50 basis. Mrs. Vimmerstedt's collection includes Mercer's first letter to her, a few Christmas cards from Mercer, and photographs taken at the 1963 Grammy Awards banquet.