The U.S. Geological Survey library systemGeological Survey (U.S.) · First published 1994Open the Tome
U.S. Geological Survey Library classification systemU.S. Geological Survey Library · First published 1992Open the Tome
U.S. Geological Survey Library classification systemU.S. Geological Survey Library · First published 1992Open the Tome
Photographs of historical mining operations in Colorado and Utah from the U.S. Geological Survey LibraryJoseph K. McGregor, C. C. Abston, Geological Survey (U.S.), U.S. Geological Survey Photographic Library · First published 1994Open the Tome
Earth science photographs from the U.S. Geological Survey Library [sic]Joseph K. McGregor, C. C. Abston, U.S. Geological Survey Photographic Library · First published 1995Open the Tome
The U.S. Geological Survey's Photographic LibraryUnited States Geological Survey · First published 1979Open the Tome
U.S. Geological Survey, Photographic LibraryU.S. Geological Survey Photographic Library. · First published 1977Open the Tome
