• 449 Geology and Geophysics Library (Leith)
• 238 Map Library (Robinson)
• 35 Memorial Library
• 14 Wisconsin Historical Society Library
• 11 Wisconsin Historical Society Archives
• 9 Wisconsin's Water Library
• 7 Steenbock Library
• 1 Middleton Shelving Facility

• 854 Maps, Atlases
• 695 Books
• 310 Journals, Magazines, Newspapers
• 34 Microforms
• 1 Remote Sensing Images

• 275 Groundwater
• 151 Geology
• 125 Water quality
• 100 Aquifers
• 92 Water-supply
• 78 Groundwater flow
• 67 Pollution
• 66 Hydrogeology
• 59 Environmental aspects
• 51 Water
• 47 Geomagnetism
• 47 Stream measurements
• 40 Floods
• 31 Water table
• 30 Quality
• 28 Hydrology
• 25 Mathematical models
• 23 Water resources development
• 20 Geology, Stratigraphic
• 20 Streamflow
• 17 Pesticides
• 16 Geological Survey (U.S.)
• 15 Saltwater encroachment
• 15 Statistics
• 14 Census districts

• 120 New York (State). Department of Environmental Conservation
• 71 Nassau County (N.Y.). Department of Public Works
• 55 Miller, Todd S
• 45 New York (N.Y.). Department of Environmental Protection
• 44 Oswego County Planning Board
• 42 New York (State). Department of Transportation
• 34 Suffolk County (N.Y.). Department of Health Services
• 34 Suffolk County Water Authority
• 25 Kappel, William M
• 25 Miller, Todd S.
• 23 United States. Environmental Protection Agency
• 22 United States. Army Map Service
• 20 Monroe County (N.Y.). Department of Health
• 20 New York (State). Department of Health
• 18 Reynolds, Richard J
• 16 Balsley, J. R
• 15 Heisig, Paul M. (Paul Martin), 1961-
• 15 Muller, Ernest Hathaway, 1923-
• 15 Yager, Richard M
• 14 National Water-Quality Assessment Program (U.S.)
• 14 United States. Bureau of the Census
• 13 Chu, Anthony
• 13 New York (State). Department of Public Works
• 13 Sherwood, Donald A

• 1,551 English

• 104 Pennsylvania
• 98 Long Island
• 76 New Jersey
• 67 Suffolk County
• 49 Connecticut
• 49 United States
• 47 Oswego County
• 44 Vermont
• 42 Nassau County
• 39 Orange County
• 39 Ulster County
• 35 Massachusetts
• 34 New York
• 34 Sullivan County
• 33 Ulster County (N.Y.)
• 32 Cattaraugus County
• 31 Chautauqua County
• 30 Dutchess County
• 30 Steuben County
• 30 Sullivan County (N.Y.)
• 30 Westchester County
• 28 Broome County
• 28 Chautauqua County (N.Y.)
• 27 Delaware County

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