| Mowbray & Robinson Co., The - No. 3, Quicksand, KY |
1087 |
| Mowbray & Robinson Co., The - No. 4, Quicksand, KY |
1099 |
| Mowbray & Robinson Co., The - No. 5, Quicksand, KY |
1133 |
| Mowbray & Robinson Co., The - No. 6, Quicksand, KY |
1213 |
| Mowbray & Robinson Co., The - No. 7, Quicksand, KY |
1275 |
| Mukilteo & Lake Washington Railway, Mukilteo, WA |
504 |
| Mukilteo Logging Co., Mukilteo, WA |
379 |
| Muncy Lumber Co. No. 2, Saint Paul, PA |
1101 |
| Muncy Lumber Co., Saint Paul, PA |
X285 |
| Mundy Lumber Co. No. 1, Taft, BC |
756 |
| Murphy Timber Co., Kerry, OR |
443 |
| Murphy Timber Co., Kerry, OR |
648
(2nd) |
| Murphy Timber Co., Kerry, OR |
1033 |
| Murphy Timber Co., Yacolt, WA |
431 |
| Murphy, McDonald - Logging Co. Ltd. No. 1, Cowichan Lake, BC |
1241 |
| Murphy, McDonald - Logging Co. Ltd. No. 2, Cowichan Lake, BC |
1645 |
| Mutual Lumber Co. No. 2, Bucoda, WA |
1011 |
| Mutual Lumber Co. No. 3, Bucoda, WA |
1003 |
| Mutual Lumber Co. No. 4, Bucoda, WA |
411 |
| Mutual Lumber Co. No. 5, Bucoda, WA |
1616 |
| Mutual Lumber Co. No. 6, Bucoda, WA |
1643 |
| Mutual Lumber Co. No. 7, Bucoda, WA |
1515 |
| Mutual Lumber Co. No. 8, Bucoda, WA |
1670 |
