Primarily, this series is personal correspondence, with some business correspondence included, both to and from the Kenyons. It is broken into five subseries. Included are typed letters signed, autograph letters, and carbon copies of letters. Signed letters (some TLS, but most ALS) are from Maurice Evans, Minnie Maddern Fiske, the Sotherns, Helen Hayes, Lucille Laverne, and others, many of the theatre celebrities also represented in the photograph series. One group of letters, from William Moore Patch, relates to his trial in Philadelphia. Another group refers to T. Thomas Kenyon’s gift of Elmer Kenyon’s Papers to the New York Public Library. Business correspondence includes one folder of lectures to and from Warren Munsell, Business Manager of the Theatre Guild, and another folder contains correspondence with the Shuberts.