Horace Trumbauer was a prominent American architect of the Gilded Age, known for designing residential manors for the wealthy. Later in his career he also designed hotels, office buildings, and much of the campus of Duke University.
Philadelphia Museum of Art (1916–28), a collaboration between Trumbauer's firm and Zantzinger, Borie and Medary
Grey Towers Castle in Glenside, Pennsylvania (1893) is present-day Arcadia University.
Trumbauer's grave in West Laurel Hill Cemetery in Bala Cynwyd, Pennsylvania
G. W. & W. D. Hewitt was a prominent architectural firm in the eastern United States at the turn of the twentieth century. It was founded in Philadelphia in 1878, by brothers George Wattson Hewitt (1841–1916) and William Dempster Hewitt (1847–1924), both members of the American Institute of Architects. The firm specialized in churches, hotels and palatial residences, especially crenelated mansions, such as Maybrook (1881), Druim Moir (1885–86) and Boldt Castle (1900–04).
St. Peter's Episcopal Church of Germantown in the Germantown section of Philadelphia, 1873
Houston-Sauveur House, Chestnut Hill, Philadelphia, PA (1885). Prior to its 1887 sale to Sauveur, this probably served as a sample house for Henry H. Houston's suburban development
The Philadelphia Bourse Building (1893-95) housed a commodities exchange until the 1960s, and is now used for retail and offices