| The U.S. Geological Survey produces various geologic map series which are
arranged by the USGS series number.
The following titles are kept in these file cabinets:
|
| A | Antarctic Geologic Maps | 1970- |
| C | Coal Investigations Maps | 1935- |
| GP | Geophysical Investigations Maps | 1946- |
| GQ | Geologic Quadrangle Maps | 1949- |
| HA | Hydrologic Investigations Atlases | 1954- |
| I | Miscellaneous Geologic Investigations Maps | 1955- |
| MF | Miscellaneous Field Studies Maps | 1951- |
| MR | Mineral Investigations Resources Maps | 1952- |
| OC | Oil and Gas Investigations Charts | 1944- |
| OM | Oil and Gas Investigations Maps | 1943- |