| A |
Agriculture |
| AE |
National Archives and Records Administration |
| B |
Broadcasting Board of Governors |
| C |
Commerce Department |
| CC |
Federal Communications Commission |
| CR |
Civil Rights Commission |
| D |
Defense Department |
| E |
Energy Department |
| ED |
Education Department |
| EP |
Environmental protection Agency |
| FA |
Fine Arts Commission |
| FCA |
Farm Credit Administration |
| FHF |
Federal Housing Financing Board |
| FM |
Federal Mediation and Conciliation Service |
| FMC |
Federal Maritime Commission |
| FR |
Federal Reserve System Board of Governors |
| FT |
Federal Trade Commission |
| FTZ |
Foreign-Trade Zones Board |
| GA |
Government Accountability Office |
| GP |
Government Printing Office |
| GS |
General Services Administration |
| HE |
Health and Human Services Department |
| HH |
Housing and Urban Development Department |
| HS |
Homeland Security |
| I |
Interior Department |
| IC |
Interstate Commerce Commission |
| ID |
US Agency for International Development |
| ITC |
International Trade Commission |
| J |
Justice Department |
| JU |
Judiciary |
| L |
Labor Department |
| LC |
Library of Congress |
| LR |
National Labor Relations Board |
| MS |
Merit Systems Protection Board |
| NAS |
National Aeronautics and Space Administration |
| NC |
National Capital Planning Commission |
| NCU |
National Credit Union Administration |
| NF |
National Foundation on the Arts and the Humanities |
| NMB |
National Mediation Board |
| NS |
National Science Foundation |
| OP |
Overseas Private Investment Corporation |
| P |
United States Postal Service |
| PE |
Peace Corps |
| PM |
Personnel Management Office |
| PR |
President of the United States |
| PREX |
Executive Office of the President |
| PRVP |
Vice President of the United States |
| RR |
Railroad Retirement Board |
| S |
State Department |
| SBA |
Small Business Administration |
| SE |
Securities and Exchange Commission |
| SI |
Smithsonian Institution |
| SSA |
Social Security Administration |
| T |
Treasury Department |
| TD |
Transportation Department |
| TDA |
US Trade and Development Agency |
| VA |
Veterans Affairs Department |
| X and Y |
Congress |
