| Philip Schuyler | Portland | OR |
| Phoinix | Portland | OR |
| Physicians & Surgeons Hospital | Portland | OR |
| Pierre Gibault | Portland | OR |
| Pierre Victory | Portland | OR |
| Pilot Butte | Portland | OR |
| Piluso's Supper Club | Portland | OR |
| Pinnacles | Portland | OR |
| Pioneer Valley | Portland | OR |
| Pipe Springs | Portland | OR |
| Pisces | Portland | OR |
| Platte | Portland | OR |
| Platt Park | Portland | OR |
| Plattsburgh | Portland | OR |
| Pleasant Armstrong | Portland | OR |
| Plycor | Klamath Falls | OR |
| Plymouth Victory | Portland | OR |
| Point Arena | Portland | OR |
| Poland Victory | Portland | OR |
| Polly | Portland | OR |
| Ponca City | Portland | OR |
| Ponce City | Portland | OR |
| Poole & Mcgonale Shipyards | Portland | OR |
| Pope & Talbot | Oakridge | OR |
| Pope & Talbot | Halsey | OR |
| Portland Artificial Ice | Portland | OR |
| Portland Gas & Coke | Portland | OR |
| Portland General Electric | Boardman | OR |
| Portland International Airport | Portland | OR |
| Portland Library | Portland | OR |
| Portland Machinery | Portland | OR |
| Portland Oregon Shipyard | Portland | OR |
| Portland Police Bureau | Portland | OR |
| Portland Power & Light | Portland | OR |
| Portland Railroad | Portland | OR |
| Portland State Services | Portland | OR |
| Portland Woolen Mills | Portland | OR |
| Poseidon | Portland | OR |
| Post Office | Medford | OR |
| Presbyterian Intercommunity Hospital | Klamath Falls | OR |
| President Arthur | Portland | OR |
| President Brand | Portland | OR |
| President Buchanan (Second) | Portland | OR |
| President Fillmore (Third) | Portland | OR |
| President Garfield (Third) | Portland | OR |
| President Reitz | Portland | OR |
| Prince L Campbell | Portland | OR |
| Prineville Bowling Alley | Prineville | OR |
| Prineville City Hall | Prineville | OR |
| Prometeo | Portland | OR |
