| Acronym | Meaning |
 | OMAO | Office Of Marine And Aviation Operations |
| FRS | Federal Reserve System; Federal Relay Service |
| MESH | Medical Subject Headings |
| NCPC | National Capital Planning Commission |
| NCLIS | National Commission On Libraries And Information Science |
| NCRR | National Center For Research Resources |
| NMB | National Mediation Board |
| AFS | Air Facility Sub-System |
| AIRS | Aerometric Information Retrieval System (changed To AFS) |
| ACC | Air Combat Command |
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