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1. Active and Dormant Landslides, Elk River Watershed, California, 1940-2000
1940. California Geological Survey, California. Department of Conservation, Marshall, Gerald, and Mendes, Eric. This polygon shapefile depicts active and dormant landslides within the Elk River watershed in Humboldt County, California. This layer does not inc... California Geological Survey.
2. Active and Dormant Landslides (Small), Elk River Watershed, California, 1940-2000
1940. California Geological Survey, California. Department of Conservation, Marshall, Gerald, and Mendes, Eric. This point shapefile depicts smaller active and dormant landslides within the Elk River watershed in Humboldt County, California. Features shown he... California Geological Survey.
3. Aegyptus (Raster Image)
1940. Stanford Geospatial Center. This layer is a georeferenced raster image of an historic regional map of Egypt originally created in 1840. All map collar and inset information is... Stanford Digital Repository.
4. American Indian Reservations, Arizona, 1940
1940. University of Arizona. Library. Statewide coverage of 1940 American Indian Reservations. Boundaries that cross into the adjacent states are included. Population data is from the A... University of Arizona.
5. Census Places, Arizona, 1940
1940. University of Arizona. Library. Statewide coverage of 1940 Places based on population data available from the U.S. Bureau of the Census. Population data is from the Sixteenth Cens... University of Arizona.
6. Census tracts of Chicago, 1940 Races and nationalities.
1940. University of Chicago Social Science Research Committee. Scale [ca. 1:50,000]; Master and use copy. Digital master created according to Benchmark for Faithful Reproductions of Monographs and Serials, Vers...
7. Clark County [Indiana] land use map: preliminary
1940. Includes chart showing type of land use, acreage, and recommended use. Scale not given. Prepared by Clark County Land Use Planning Committee.
8. Contacts and Faults, Elk River Watershed, California, 1940-2000
1940. California Geological Survey, California. Department of Conservation, Marshall, Gerald, and Mendes, Eric. This line shapefile depicts contacts and faults within the Elk River watershed in Humboldt County, California. This dataset is the product of the D... California Geological Survey.
9. County Subdivisions, Arizona, 1940
1940. University of Arizona. Library. Statewide coverage of 1940 Census County Subdivisions (Minor Civil Divisions). University of Arizona.
10. Crawford County [Indiana] land use map: preliminary
1940. Includes chart showing type of land use, acreage, and recommended use. Scale not given. Prepared by Crawford County Land Use Planning Committee.