| Serial Number Registry |
| CATERPILLAR Models [ Return to Registry ] | Count |
|---|---|
| D-2 | 23 |
| TEN | 13 |
| TWENTY TWO | 12 |
| D-4 | 11 |
| FIFTEEN | 8 |
| D-7 | 6 |
| RD-4 | 6 |
| D-6 | 5 |
| D-8 | 4 |
| R-2 | 4 |
| DIESEL FIFTY | 2 |
| R-4 | 2 |
| GRADER | 2 |
| TWENTY EIGHT | 2 |
| 60 | 1 |
| DIESEL SEVENTY-FIVE | 1 |
| AUTO PATROL NO. 7 | 1 |
| CH 55 | 1 |
| D4 | 1 |
| TWENTY | 1 |
| 22 | 1 |
| R | 1 |
| D7 | 1 |
| 426B | 1 |