- United States Government Publications -
| A | Agriculture Department |
| C.3 | Census Bureau (Commerce Department) |
| D | Defence Department |
| E | Energy Department |
| ED | Education Department |
| GA | General Accounting Office |
| GS | General Services Administration |
| HE | Health and Human Services |
| I | Interior Department |
| J | Justice Department |
| Ju | Judiciary Department |
| L | Labor Department |
| LC | Library of Congress |
| NAS | National Aeronautics and Spcace Administration |
| S | State Department |
| S1 | Smithsonian institute |
| T22 | Internal Revenue Service (Treasury Department) |
| X, Y | Congress |
| Y4 | Congressional Committees |
These numbered series of publications issued by Congress are not given a place in the system by use of lettered symbols but are simply filed at the end of all other classifications by Congress, session, and individual number with numbers representing the series titles.
| Series Individual examples | ||
| Senate Documents | Y 1.1/3: | |
| Senate Reports | Y 1.1/5: | |
| House Documents | Y 1.1/7: | |
| House Reports | Y 1.1/8: | |
| Senate Bills | Y 1.4/1: | |
| Senate Resolutions | Y 1.4/2: | |
| Senate Joint Resolutions | Y 1.4/3: | |
| Senate Concurrent Resolutions | Y 1.4/4: | |
| House Bills | Y 1.4/6: | |
| House Resolutions | Y 1.4/7: | |
| House Joint Resolutions | Y 1.4/8: | |
| House Concurrent Resolutions | Y 1.4/9: | |