USGS Library locations are open to visitors. Reston: 9 am to 3 pm local, Monday through Friday. Denver: 9 am to 3 pm local, Monday, Wednesday, Friday. Closed Federal holidays. For more information, please contact library@usgs.gov
USGS Library
Authorized by Congress in 1879, the U.S. Geological Survey Library is recognized as one of the world’s leading Earth and natural science libraries, providing services, collections, and expertise essential to the USGS mission.
Ask a Librarian
Each library location has expert reference librarians available to assist with research and provide answers to reference questions received by phone, fax, or in person. To ask for reference assistance by E-mail, Ask a Librarian at library@usgs.gov.
Quick Links
Use these links to access library resources.