Pennsylvania - Constructed - 1920–1929
| 1616 Building |
| 1900 Rittenhouse Square Apartments |
| Alden Park Manor |
| Allegheny River Locka and Dam No. 5 |
| Allegheny River Lock and Dam No. 4 |
| Allentown Masonic Temple |
| Allerdice, Taylor, High School |
| American Railway Express Company Garage |
| Americus Hotel |
| Armstrong Tunnel |
| Belmont School |
| Benjamin Franklin Hotel |
| Berwick Armory |
| Boggs Avenue Elementary School |
| Cathedral of Learning |
| Chateau Crillon Apartment House |
| Coffee Pot, The |
| Equitable Trust Building |
| Erie Trust Company Building |
| Fell, D. Newlin, School |
| Fidelity Mutual Life Insurance Company Building |
| Glendside Memorial Hall |
| Gratz, Simon, High School |
| Griest, W.W., Building |
| Hawthorne School |
| Jenks, John Story, School |
| Jones, B. F., Memorial Library |
| Kingston Armory |
| Langley High School |
| Lansdale Silk Hosiery Company-Interstate Hosiery Mills, Inc. |
| Longue Vue Club and Golf Course |
| Malvern Hall |
| Market Street Bridge |
| Masonic Temple and Scottish Rite Cathedral |
| Ninth Street Bridge |
| North Broad Street Station, Reading Company |
| Oliver, David P., High School |
| Overbrook High School |
| Penn Alto Hotel |
| Reading Railroad Pottstown Station |
| Salvation Army Building, The |
| Scottish Rite Cathedral |
| Scranton Chamber of Commerce Building |
| Sheffield Apartments |
| Sixteenth Street Bridge |
| Spring Garden School No. 1 |
| Stanley Theater and Clark Building |
| Stanton, Edwin M., School |
| St. Boniface Roman Catholic Church |
| St. John the Evangelist Roman Catholic Church and School Building |
| Suburban Station Building |
| The Elverson Building |
| Tindley Temple United Methodist Church |
| Trinity Hall |
| University Avenue Bridge |
| Wesley AME Zion Church |
| WFIL Studio |
Data from United States Park Service and Wikidata
