| Port Barre Hardwood Co., Port Barre, LA |
846 |
| Port Blakely Mill Co. No. 2 IRENE, Kamiche, WA |
200 |
| Port Blakely Mill Co. No. 5, Kamilche, WA |
1365 |
| Porterfield Lumber Co. No. 225, Interior, VA |
225 |
| Porters Creek Railroad No. 1, Porters Creek, WV |
X37 |
| Portland Lumber Co. No. 2, Grays River, WA |
190 |
| Portland Lumber Co. No. 6, Rainier, OR |
457 |
| Potate Timber Co., Matapuna, NZ |
1203 |
| Potato Creek Railroad No. 20, Norwich, PA |
638 |
| Powell & Denning, Canton, NC |
X139 |
| Powell & Denning, Canton, NC |
X471 |
| Powell River Co. Ltd. No. 1, Powell River, BC |
1491 |
| Powell River Co. Ltd. No. 2, Queen Charlotte Islands, BC |
1511 |
| Powell River Co. Ltd. No. 3, Queen Charlotte Islands, BC |
1547 |
| Powell River Co. Ltd. No. 4, Queen Charlotte Islands, BC |
1539 |
| Powers, P. H., Cornplanter, PA |
X1 |
| Prentice, E. I. - No. 186, Derby, MS |
186 |
| Prescott & Veness Lumber Co., Winlock, WA |
X46 |
| Preston Mill Co. No. 1, Preston, WA |
1007 |
| Preston Mill Co. No. 2, Preston, WA |
1535 |
| Progressive Mill Co., Big Lake, WA |
189 |
| Prouty Timber Co. No. 2, Timber, OR |
190 |
| Prouty Timber Co. No. 2, Timber, OR |
886 |
| Puffing Billy Museum No. 1694, PUFFING BILLY, Menzies Creek, VIC |
1694 |
| Puget Sound Mills & Timber Co. No. 1, Port Crescent, WA |
160 |
| Puget Sound Mills & Timber Co. No. 2, Port Crescent, WA |
242 |
| Puget Sound Pulp & Timber Co. No. 12, Conway, WA |
1581 |
| Puget Sound Saw Mills & Shingle Co. No. 290, Concrete, WA |
1415 |
| Puget Sound Saw Mills & Shingle Co., Concrete, WA |
1433 |
| Pukeweka Sawmilling Co., Manunui, NZ |
1203 |
| Pure Oil Co. No. 1, Dawes, WV |
X154 |
| Pure Oil Co. No. 2, Dawes, WV |
X153 |
| Pure Oil Co., Location Unknown |
928 |
| Puyallup Valley Lumber Co., Puyallup, WA |
736 |
