| W&L REFERENCE & JOURNAL COLLECTION suggest additions | |||
 All subjects | |||
| Limit this Level by Subject 11 | |||
| Name | Description | Cost | Supplier |
| U.S Geological Survey Publications | Index of the US Geological Survey's publications and maps (1880- ) | F | USGS |
| U.S. Census | U.S. Census: population, housing, economic, geographic data | F | U.S. Census |
| U.S. Gazetteer | Short descriptions of places in the U.S. | F | U.S. Census |
| U.S. Supreme Court | Supreme Court decisions, oral arguments and docket information | F | Supreme Court |
| Ulrich's | Ulrich's Periodicals Directory | S | Bowker |
| UN Documentation Centre | United Nations Documentation Centre | F | UN |
| UN Index (AccessUN) | United Nations documents index (1945- ) | S | Newsbank |
| UN Treaties | United Nations Treaty Collection (full-text) | S | UN |
| UNBISnet | United Nations Bibliographic Information System | F | UN |
| USA Today Weather | Weather service at USA Today | F | USA Today |
| USA.gov (previously FirstGov) | U.S. Federal Government's collection of web sites | F | GSA |