| AD | - | Associate Director |
| ARD | - | Associate Regional Director |
| BNRR | - | Burlington-Northern Railroad |
| D | - | Director |
| DD | - | Deputy Director |
| DOI | - | Department of the Interior |
| DRD | - | Deputy Regional Director |
| EPA | - | Environmental Protection Agency |
| GMP | - | General Management Plan |
| GRKO | - | Grant-Kohrs Ranch NHS |
| HFC | - | Harpers Ferry Center |
| HS | - | Historic Structure |
| IP | - | Interpretive Prospectus |
| MWAC | - | Midwest Archeological Center |
| MWR | - | Midwest Region |
| MWRO | - | Midwest Regional Office |
| NPF | - | National Park Foundation |
| NPS | - | National Park Service |
| RD | - | Regional Director |
| RMR | - | Rocky Mountain Region |
| RMRO | - | Rocky Mountain Regional Office |
| SAR | - | Superintendent's Annual Report |
| SCS | - | Soil Conservation Service |
| SFI | - | Statement for Interpretation |
| SFM | - | Statement for Management |
| USDA | - | U. S. Dept. of Agriculture |
| WSC | - | Western Service Center |
| YELL | - | Yellowstone National Park |