Because of the federal government shutdown, ngmdb.usgs.gov is not being updated and the agency will not be able to respond to inquiries until appropriations are enacted. For more information please visit: https://www.doi.gov/shutdown
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National Geologic Map Database
Locating Out-of-print Publications
- The U.S. Geological Survey Libraries contain sets of all USGS publications and many state geological survey publications. You may go to a USGS library, or request the local library to borrow the publication from the USGS.
- Out-of-print publications also may be found at the state geological surveys, and at larger state and university libraries. Some have interlibrary loan capabilities, but publications can at least be read or copied on-site.
- Federal and state government publications also are made available to the public at Depository Libraries across the country.