The story is set between September, 1916 and June, 1917. Duke University archives show Angie and Cordie's oldest child, Angier Biddle Duke, was born in November, 1915. The younger Angie was a career diplomat and state department chief of protocol when the movie was made.
The Biddle Mansion at 2104 Walnut Street is shown as being directly across Walnut Street(the North side of Walnut Street) from Rittenhouse Square. In fact, Rittenhouse Square is between 18th and just beyond 19th Street on the South side of Walnut Street. 2104 is two blocks West and also on the South side of Walnut Street. This block is now occupied by a high-ride apartment building.
In the opening scene, the camera appears to look East on Walnut Street, past Rittenhouse Square, with the tower of Philadelphia City Hall in the distance. Cars are shown on a drive in the square. No such drive ever existed. City Hall is on Market Street and the tower would have been outside the frame of this shot.