These materials document Robert G. Lowery’s research on and collecting of materials related to the Irish playwright Sean O'Casey. Topics include Lowery's founding of the Sean O'Casey Review; his organization of several conferences and events in honor of O'Casey; his friendships with other O'Casey scholars; and his relationships with O'Casey’s family and friends. The collection includes articles, clippings, correspondence, fliers, notes, pamphlets,... photographs, posters, programs, scrapbooks, and scripts. Notable correspondents include actors, public figures, and writers such as Lillian Gish, Edward Kennedy, Angela Lansbury, Walter Matthau, Arthur Miller, Laurence Olivier, and Lynn Redgrave. The collection includes a great deal of ephemera from productions of Sean O'Casey’s plays from the 1910s to the 1990s; reproductions of photographs of O'Casey’s early life; and photographs of many of the locations in Ireland important to his early years.