There are 5 databases that start with "U"

1. U.S. Congressional Serial Set

Reports, documents and journals of the U.S. Senate and House of Representatives, originally published in approximately 13,800 bound volumes ... (more info)

2. U.S. Exports of Merchandise and U.S. Imports of Merchandise

Value, quantity, weight and shipping method of merchandise exported and imported; commodity-by-country data (U.S. totals & by customs districts).... (more info)

3. Ulrichsweb

Ulrichsweb.com is the authoritative source of detailed information on more than 300,000 periodicals of all types -- academic and scholarly journals, Open Access publications, peer-reviewed titles, pop... (more info)

4. Urban Studies Abstracts

Includes bibliographic records covering essential areas related to urban studies, including urban affairs, community development, urban history, and other areas of key relevance to the discipline. ... (more info)

5. USA Trade Online

Import, export, trade and port data. This database is available to government depository libraries for in person use. See the government documents department for more information. ... (more info)