 | Pan American Union Building (Washington, D.C.) (4) |
| | Park View School (Washington, D.C.) (1) |
| | Pennsylvania Railroad (3) |
| | Pennsylvania Station (5) |
| | Philadelphia Immigration Station (Gloucester City, N. J.) (1) |
| | Police Court (Washington, D.C.) (1) |
| | Powhattan Hotel (Washington, D.C.) (1) |
| | Princepessa Irene (Ship) (1) |
| | Red Star Line (1) |
| | Riggs National Bank (2) |
| | R. M. S. Cedric (Ship) (1) |
| | Saint Rose Catholic Church (Carbondale, Pa.) (1) |
| | Samuel Hahnemann Memorial (Washington, D.C.) (1) |
| | Scottish Rite Temple (Washington, D.C.) (5) |
| | Shoreham Hotel (Washington, D.C.) (1) |
| | Slane Castle (Ireland) (1) |
| | Southern Building (Washington, D.C.) (1) |
| | S.S. Kamagata Manu (Ship) (1) |
| | S.S. Zeeland (Steamship) (1) |
| | St. John's Church (Washington, D.C.) (1) |
| | St. Matthew's Church (Washington, D.C.) (3) |
| | St. Patrick's (Church : Washington, D.C.) (4) |
| | Treasury Building (Washington, D.C.) (10) |
| | Trinity Church (Washington, D.C.) (1) |
