| Clemons, C. H. - Logging Co. No. 1, Melbourne, WA |
443 |
| Clemons, C. H. - Logging Co. No. 3 (1st) VESTA, Melbourne, WA |
1027 |
| Clemons, C. H. - Logging Co. No. 4, Melbourne, WA |
1411 |
| Clendennin & Spencer Railroad, Shelly, WV |
X35 |
| Clendennin & Spencer Railroad, Shelly, WV |
X36 |
| Clifton Manufacturing Co. No. 1647, Clifton, SC |
1647 |
| Clifton Manufacturing Co., Clifton, SC |
X146 |
| Climax Locomotive Co. (D), Seattle, WA |
1443 |
| Climax Locomotive Co. (D), Seattle, WA |
1535 |
| Climax Locomotive Co. (D), Seattle, WA |
1537 |
| Climax Logging Co., Bay City, WA |
240 |
| Climax Saw Mill Co. No. 3, Climax, AL |
538 |
| Clinch Valley Lumber Corp. No. 6, Fort Blackmore, VA |
X498 |
| Clinch Valley Lumber Corp., Fort Blackmore, VA |
222 |
| Clinch Valley Lumber Corp., Fort Blackmore, VA |
365 |
| Clinchfield Coal Co. (not operated), Swandale, WV |
1692 |
| Cline, Paul, Kingsport, TN |
X499 |
| Clinton Mining Co. No. 4, Clinton County, PA |
X80 |
| Clough, L. S. - & Co., Cloughs Mills, PA |
X30 |
| Clover Run Lumber Co. No. 367, Parsons, WV |
367 |
| Coal Creek Lumber Co. No. 2, Chehalis, WA |
718 |
| Coast Range Lumber Co., Mabel, OR |
443 |
| Coats Driving & Doom Co., Tillamook, OR |
548 |
| Coats, A. F. - Logging Co. No. 1, Aberdeen, WA |
564 |
| Coats, A. F. - Logging Co. No. 2, Aberdeen, WA |
768 |
| Coats, A. F. - Lumber Co. No. 3, Tillamook, OR |
1553 |
| Coats, A. F. - Lumber Co., Tillamook, OR |
X347 |
| Coats, A. F. - Lumber Co., Tillamook, OR |
548 |
| Coats-Fordney Logging Co. No. 1, Aberdeen, WA |
564 |
| Coats-Fordney Logging Co. No. 2, Aberdeen, WA |
768 |
| Coats-Fordney Logging Co. No. 3, Aberdeen, WA |
1169 |
| Cobbs Creek Railroad, Location Unknown |
X157 |
| Cochran, C. W. - Lumber Co., Cantwell, AL |
846 |
| Coffs Harbour Timber Co., Crosma Glen, NSW |
X47 |
| Cole & Crane No. 5, Craneco, WV |
X130 |
| Cole & Crane No. 6, Craneco, WV |
1049 |
| Cole Shingle Co., South Bend, WA |
X333 |
| Cole, James, Winlock, WA |
1033 |
| Coleman Lumber Co., Coleman Siding, PA |
X435 |
| Coleman, Harter & McCormick No. 2, Tionesta, PA |
X136 |
| Colima Lumber Co., Colima, Mexico |
X381 |
| Colima Lumber Co., Colima, Mexico |
X380 |
| Collins & Watson No. 101, Golinza, PA |
101 |
| Collins & Watson No. 5, Golinza, PA |
740 |
| Collins, T. D. - No. 148 THE GOLD BUG, Nebraska and Kellettville, PA |
148 |
| Colorado & Northwestern Railway No. 2, Boulder, CO |
167 |
| Columbia & Nehalem River Railroad No. 115, Kerry, OR |
1337 |
| Columbia & Nehalem River Railroad No. 116, Kerry, OR |
1333 |
| Columbia & Nehalem River Railroad No. 121, Kerry, OR |
1341 |
| Columbia & Nehalem River Railroad No. 122, Kerry, OR |
1451 |
