The L. Claire Kincannon theatre collection contains promotional materials for theatre productions attended by theatre critic and radio journalist Lois Claire Kincannon in Washington D.C., Dayton, Ohio, New York City, London, Paris, and other areas across the United States and Europe, dating from 1941-2015. Materials include programs, playbills, photographs, press kits, newspaper articles, drafted and published reviews, and articles, as well as visual and audio materials from a project in Hungary and Kincannon's radio show Behind the Scenes. This collection consists of two series.

Series 1: Theatre and film-related materials consists of five subseries. Subseries 1: Washington, D.C. and District-Maryland-Virginia (DMV) area; Subseries 2: Ohio regional theatres; Subseries 3: New York productions; Subseries 4: Other American productions; and Subseries 5: International productions. Materials in this series include programs, playbills, stage bills, press releases, photographs, news articles, ticket stubs, invitations, and advertisements from theatre and motion picture productions across the United States and Eastern Europe, and are divided based on location. Some programs also contain Kincannon's handwritten notes. Many of these materials are from the John F. Kennedy Center for the Performing Arts, the National Theatre, Arena Stage, The Folger Theatre, Wolf Trap Farm Park, and various other theatres in the D.C. area. It also includes productions by the Kenley Players and Victory Theatre in Dayton, Ohio, among others in the area.

Series 2: Behind The Scenes production materials contains materials created during Kincannon's career, including drafted, unpublished, and published articles and scripts for her Bydin' my Time segment in the Blue Ridge Leader newspaper and her radio show Behind the Scenes. Materials include audio and visual materials from Behind the Scenes, as well as outlines, radio broadcast schedules, contracts, proposals, funding, and business correspondence.