Original: The screenplay is by AJ Carothers based on the play that was based on the book My Philadelphia Father by Cordelia Drexel Biddlep .55 Burt , Nathaniel The Perennial Philadelphians : The Anatomy of an American Aristocracy 1999 University of Pennsylvania Press .
Simplified: The screenplay is by AJ Carothers based on the play that was based on the book My Philadelphia Father by Cordelia Drexel Biddle .