Letter of Introduction is a 1938 American comedy-drama film directed by John M. Stahl.

Plot
An aging actor, John Mannering, is surprised when his estranged daughter, Kay Martin, shows up. She is an actress trying to succeed on Broadway. He is persuaded to perform on Broadway for the first time in twelve years in a play with her. He is anxious about his performance, so turns to alcohol to overcome his self-doubt. He tries to re-establish his relationship with his daughter while trying to hide from the press that she is his daughter.

Cast
Adolphe Menjou as John Mannering
Andrea Leeds as Katherine “Kay” Martin
George Murphy as Barry Paige
Edgar Bergen as himself
Rita Johnson as Honey
Ann Sheridan as Lydia Hoyt
Ernest Cossart as Andrews, the Butler
Frank Jenks as Joe, theatre prompter
Eve Arden as Cora Phelps
Charlie McCarthy as Himself – dummy
Mortimer Snerd as Himself – dummy
Ray Walker as Reporter