Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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You searched for: Time Period 1950-1999 Remove constraint Time Period: 1950-1999
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1.
Vector Created with Sketch.

104 State Water Plan Watersheds: Pennsylvania

1998. Environmental Resources Research Institute. Digitized boundaries of 104 major watersheds defined in the Pennsylvania state water plan. The State Water Plan, originally developed in the 1970s,...

2.
1:250k Digital Raster Graphic - Collars Removed: Minnesota

1:250k Digital Raster Graphic - Collars Removed: Minnesota

1998. U.S. Geological Survey and Minnesota DNR. A digital raster graphic (DRG) is a scanned image of an U.S. Geological Survey (USGS) standard series topographic map, including all map collar inf...

3.
[1970 census enumeration district and census tract map of Monroe County, Indiana].

[1970 census enumeration district and census tract map of Monroe County, Indiana].

1970?. Title supplied by cataloger.; Blue line print.; Base map: General Highway and transportation map, Monroe County, Indiana / prepared by the Indiana ...

4.
32,000 to vote in 29 precincts here: [Bloomington, Ind.].

32,000 to vote in 29 precincts here: [Bloomington, Ind.].

1966. From Daily Herald-Telephone, Bloomington, Indiana, November 4, 1966.; Map shows voting precincts inside the City of Bloomington, Indiana, and inclu...

5.
7th congressional district of Indiana, 1972.

7th congressional district of Indiana, 1972.

1972. Boundaries of 7th Congressional District of Indiana in 1972 drawn on a copy of Counties and townships map, p. 10 of Kingsbury, Robert C., An atlas ...

6.
A map of Fort Wayne about 1812: showing also certain earlier happenings

A map of Fort Wayne about 1812: showing also certain earlier happenings

1989, 1933. Brainard, Noble E., cartographer. The area included on the map is about 2 1/2 miles from east to west & 1 7/8 miles north to south.; Includes illustrations and text on the map and a...

8.
Abandoned railroads of Indiana.

Abandoned railroads of Indiana.

1960?. Pen and ink.; Base map: Geological Survey (U.S.). State of Indiana, Scale 1:500,000, Washington, D.C., 1950. Scale approximately 1:2,027,520.

9.
Vector Created with Sketch.

Active Railroads: Pennsylvania

1996. Environmental Resources Research Institute. Location of active rail lines in Pennsylvania, digitized from 1:24,000 USGS topographic maps on a stable mylar base.

10.
Vector Created with Sketch.

Advisory Neighborhood Commission: Washington, D.C., 1990

1990. District of Columbia GIS Program. Advisory Neighborhood Commission (ANC) polygons. This dataset contains polygons representing ANC boundaries in 1990C. Office of the Chief Technolog...