This collection documents Irish playwright Sean O'Casey's business, personal, and political activities through his correspondence. The collection also contains letters from his wife, Eileen, and son, Breon, to friends and business acquaintances regarding O'Casey. Notable correspondents include Don Burke, a journalist from Life magazine who befriended O'Casey and advised him on matters concerning television adaptations of his plays; Sheila Greene, an Irish politician; Marvin Magalaner, an English professor; and John O'Shaughnessy, who directed a Broadway production of O'Casey’s Bedtime Story.

Also included is a flyer for the 1930 film adaptation of O'Casey's Juno and the Paycock, directed by Alfred Hitchcock.