| A/E | architectural/engineering |
| AAM | American Association of Museums |
| AC | air conditioning |
| AIA | American Institute of Architects |
| ANCS | Automated National Catalog System |
| ATS | Arch Transportation Services |
| CPR | cardiopulmonary resuscitation |
| CUSP | cutting and splitting equipment |
| D | Democrat |
| DC | direct current |
| DSC | Denver Service Center |
| EEO | Equal Employment Opportunity |
| EMS | Emergency Medical Services |
| EMS | Energy Management System |
| EMT | Emergency Medical Technicians |
| EOP | Emergency Operations Plan |
| EPA | Environmental Protection Agency |
| FAA | Federal Aviation Administration |
| FBI | Federal Bureau of Investigation |
| FLETC | Federal Law Enforcement Training Center |
| FTE | Full-time equivalency |
| FTS | Federal Telephone Service |
| FY | fiscal year |
| GSA | General Services Administration |
| HABS | Historic American Buildings Survey |
| HFC | Harpers Ferry Center |
| HOK | Hellmuth, Obata & Kassabaum |
| HVAC | heating and air conditioning |
| IL | Illinois |
| IPM | integrated pest management |
| JEFF | Jefferson National Expansion Memorial |
| JNEHA | Jefferson National Expansion Historical Association |
| JNEM | Archives Jefferson National Expansion Memorial Archives |
| JNEMC | Jefferson National Expansion Memorial Commission |
| JTPA | Federal Job Training Partnership Act |
| MEP | museum education program |
| MG | motor generator |
| MMS | Maintenance Management System |
| MO | Missouri |
| MWE | Museum of Westward Expansion |
| MWR | Midwest Region |
| MWRO | Midwest Regional Office |
| MUNY | Municipal Theatre Association of St. Louis |
| NHS | National Historic Site |
| NCIC | National Crime Information Center |
| NPS | National Park Service |
| OSHA | Occupational Safety and Health Administration |
| PACE | Progress and Action Through Citizen's Efforts |
| R | Republican |
| REJIS | Regional Justice Informational Service |
| ROTC | Reserve Officer Training Corps |
| SEE | Summer Education Experience |
| SEG | Special Exhibit Gallery |
| SET | Special Event Team |
| SFI | Statement for Interpretation |
| SIDS | Sudden Infant Death Syndrome |
| SIUE | Southern Illinois University Edwardsville |
| SLATE | St. Louis Agency on Training and Employment |
| SUP | Special Use Permit |
| SWIDA | Southwest Illinois Development Authority |
| TWA | Trans World Airlines |
| ULSG | Ulysses S. Grant National Historic Site |
| UM/Rolla | University of Missouri Rolla |
| VIP | Volunteers-in-Parks |
| VP | Fair Veiled Prophet Fair |
| WASO | Washington Office, National Park Service |
| WPA | Works Progress Administration |
| YCC | Youth Conservation Corps |