Notman is most noted for his Philadelphia ecclesiastical architecture for the Protestant Episcopal Church, including St. Mark's Church, Locust Street (1850); St. Clement's Church, Twentieth Street (1857); and the Church of the Holy Trinity, Rittenhouse Square.
The four bronze statues in niches on the building's main facade - Mary, Jesus, St. Peter and St. Paul - were added in 1915 [REF].