| 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 |