• 123 Map Library (Robinson)
• 53 Steenbock Library
• 3 Wisconsin Historical Society Library
• 1 Geology and Geophysics Library (Leith)
• 1 Memorial Library
• 1 Verona Shelving Facility

• 142 Maps, Atlases
• 62 Books
• 7 Journals, Magazines, Newspapers

• 18 Recreational use
• 17 Motor vehicles
• 15 Roads
• 14 Forest roads
• 10 Express highways
• 10 Forest reserves
• 9 Forest management
• 9 Outdoor recreation
• 7 Ponderosa pine
• 6 Camping
• 6 Soils
• 5 Fuelwood cutting
• 4 Forests and forestry
• 4 Timber
• 4 Wildlife habitat improvement
• 3 Control
• 3 Environmental aspects
• 3 Forest fires
• 3 Maps
• 3 Soil surveys
• 3 Trail bike trails
• 3 Trails
• 2 Antiquities
• 2 Automobile driving
• 2 Birds

• 116 Geological Survey (U.S.)
• 25 Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
• 6 United States. Soil Conservation Service
• 5 Intermountain Forest and Range Experiment Station (Ogden, Utah)
• 4 University of Arizona. Agricultural Experiment Station
• 3 Setzer, Theodore S
• 2 Campbell, R. E. (Richard Ewen)
• 2 Eisenhower Consortium for Western Environmental Forestry Research
• 2 Ffolliott, Peter F.
• 2 Patton, David R.
• 2 Pond, Floyd W
• 2 Richardson, M. L
• 2 United States
• 2 United States. Bureau of Land Management
• 2 Williams, John A., 1913-
• 1 Anderson, Thomas C., 1928-
• 1 Arizona Rare Plant Committee
• 1 Arizona State University
• 1 Arizona State University. College of Engineering and Applied Sciences
• 1 Arizona Water Commission
• 1 Baker, J. B. (Superintendent)
• 1 Baker, Malchus B.
• 1 Baum, Rex L
• 1 Blackmon, B. G.

• 206 English
• 3 Spanish

• 51 Apache National Forest (Ariz. and N.M.)
• 35 Sitgreaves National Forest (Ariz.)
• 31 Tonto National Forest (Ariz.)
• 27 New Mexico
• 20 Gila County (Ariz.)
• 11 Coronado National Forest (Ariz. and N.M.)
• 10 Coconino National Forest (Ariz.)
• 9 Prescott National Forest
• 9 Prescott National Forest (Ariz.)
• 8 Catron County (N.M.)
• 8 Coconino National Forest
• 8 Greenlee County (Ariz.)
• 8 Kaibab National Forest (Ariz.)
• 8 Maricopa County (Ariz.)
• 7 Kaibab National Forest
• 6 Gila National Forest (N.M.)
• 6 Yavapai County (Ariz.)
• 5 Coronado National Forest
• 5 United States
• 4 Pinal County (Ariz.)
• 4 Santa Cruz County (Ariz.)
• 3 Apache County (Ariz.)
• 3 Grant County (N.M.)
• 3 Pima County (Ariz.)

Limit year range