| Imel, Powers & Shank, Cornplanter, PA |
X1 |
| Index-Galena Lumber Co. No. 1, Index, WA |
680 |
| Index-Galena Lumber Co. No. 2, Index, WA |
379 |
| Index-Galena Lumber Co. No. 2, Index, WA |
1349 |
| Index-Galena Railroad No. 2, Index, WA |
1349 |
| Index-Galena Railroad No. 2, Index, WA |
379 |
| Indian Creek Coal & Coke Co., Indian Head, PA |
808 |
| Indian Creek Valley Railway No. 1908, Indian Creek, PA |
870 |
| Industrial Timber Co. No. 1, WA |
1471 |
| Industrial Timber Co., Index, WA |
1349 |
| Industrial Timber Mills Ltd. No. 1, Cowichan Lake, BC |
1657 |
| Industrial Timber Mills Ltd. No. 2, Cowichan Lake, BC |
1487 |
| Industrial Timber Mills Ltd. No. 4, Cowichan Lake, BC |
1669 |
| Industrial Timber Mills Ltd. No. 44, Cowichan Lake, BC |
1525 |
| Industrial Timber Mills Ltd. No. 5, Youbou, BC |
1684 |
| Interstate Cooperage Co. No. 11, Boggs, WV |
X241 |
| Interstate Cooperage Co. No. 16, Allendale, MS |
X168 |
| Interstate Logging Co. No. 12, Timber, OR |
568 |
| Interstate Lumber Co., Raleigh County, WV |
X115 |
| Irish Creek Railway No. 2, Cornwall, VA |
201 |
| Irish Creek Railway No. 3, Cornwall, VA |
742 |
| Irish Creek Railway No. 4, Cornwall, VA |
155 |
| Irish Creek Railway No. 5, Cornwall, VA |
1305 |
| Iron City Lumber Co. No. 3, Iron City, PA |
X30 |
| Iron City Railroad No. 3, Iron City, PA |
X30 |
| Iron Mountain Lumber Co., Troutdale, VA |
X224 |
| Irvin, William - & Co. No. 1, Big Run, PA |
X540 |
| Izett Lumber Co. No. 1, Brinnon, WA |
652 |
| Izett Lumber Co. No. 3, Brinnon, WA |
964 |
| Izett Lumber Co., Brinnon, WA |
916 |
