| Nanaimo Lumber Co. No. 1, Nanaimo, BC |
1688 |
| Nansen Chemical Co., Nansen, PA |
514 |
| Nansen Chemical Co., Nansen, PA |
X468 |
| Napavine Lumber & Manufacturing Co., Napavine, WA |
272 |
| National Chemical Co. No. 1, Lyman Run, PA |
514 |
| National Machinery Co. (D), BC |
606 |
| Natural Bridge & Campton Railroad No. 1, McCormicks, KY |
X66 |
| Natural Bridge & Campton Railroad No. 2, McCormicks, KY |
X218 |
| Natwick & Nixon Co., Clinchburg, VA |
1319 |
| Nehalem Valley Lumber Co., OR |
682 |
| Neola Lumber Co., Neola, WV |
826 |
| Nevada County Narrow Gauge Railroad, Colfax, CA |
1023 |
| Nevada County Narrow Gauge, Location Unknown |
X232 |
| New Dominion Lumber Co. EVA LEE, Diana, WV |
473 |
| New Moorefield Lumber Co. No. 1, Moorefield, WV |
X170 |
| New Moorefield Lumber Co. No. 2, Moorefield, WV |
X171 |
| New Orleans Great Northern Railroad No. 300, Bogalusa, LA |
752 |
| New Orleans Great Northern Railroad No. 301, Bogalusa, LA |
762 |
| New Orleans Great Northern Railroad No. 302, Bogalusa, LA |
782 |
| New Orleans Great Northern Railroad No. 303, Bogalusa, LA |
906 |
| New Orleans Great Northern Railroad No. 304, Bogalusa, LA |
914 |
| New River Export Smokeless Coal Co., Lookout, WV |
X167 |
| New River Lumber Co. No. 2, Long Bottom, WV |
X182 |
| New River Lumber Co. No. 3, Long Bottom, WV |
X183 |
| New River Lumber Co. No. 4, Long Bottom, WV |
X184 |
| New York & Pennsylvania Co., Johnsonburg, PA |
252 |
| New York & Pennsylvania Co., Johnsonburg, PA |
X220 |
| Newcomer Coal Co., Uniontown, PA |
X60 |
| Newell & Bryant Lumber Co. No. 2, Spring Hope, NC |
X328 |
| Newhall, Walter S. - Co. No. 1, Chagrin Falls, OH |
X147 |
| Niagara Logging Co., Raymond, WA |
1219 |
| Nichols, H. B. - Lumber Co. No. 1, Diana, WV |
X366 |
| Nicola Pine Mills Ltd. No. 2, Merritt, BC |
1201 |
| Nicola Pine Mills Ltd. No. 3, Merritt, BC |
1622 |
| Niles Fire Brick Co., Lucinda, PA |
X44 |
| Nimpkish Timber Co. Ltd. No. 4, Nimpkish River, BC |
1279 |
| Ninemire & Morgan Lumber Co. Rochester, WA |
189 |
| Ninemire & Morgan Lumber Co., Rochester, WA |
672 |
| Nippon Lumber Co., Alpine, WA |
243 |
| Nippon Lumber Co., Alpine, WA |
371 |
| Nome Arctic Railroad No. 212, Nome, AK |
212 |
| Nome Arctic Railroad No. 315, Nome, AK |
315 |
| Nome Arctic Railroad No. 399, Nome, AK |
399 |
| Nooksack Timber Co., Deming, WA |
1591 |
| Noon, W. C. - Lumber Co., Noon Station, OR |
248 |
| Nordby & Scott, Inc. Klickitat, WA |
674 |
| Norfolk & Western Railway, Devon, WV |
485 |
| North American Refractories Co., North Bend, PA |
X478 |
| North American Refractories Co., Renovo, PA |
X475 |
| North Bend Fire Brick Co., North Bend, PA |
X478 |
