Based on the following Broadway production: Up in Mabel's Room (1919). Written by Wilson Collison and Otto A. Harbach. Eltinge 42nd Street Theatre: 15 Jan 1919- Aug 1919 (closing date unknown/229 performances). Cast: Harry C. Bradley, Lucy Cotton, John Cumberland, Hazel Dawn, Evelyn Gosnell, H. Dudley Hawley, Walter Jones, Enid Markey, Adele Rolland, Frederick Sutton. Produced by A.H. Woods. Note: filmed by Christie Productions as Up in Mabel's Room (1926) and by United Artists (by producer Edward Small) as Up in Mabel's Room (1944).