Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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1. Public Land Survey System (PLSS) Boundaries: Illinois, 2003

1968. Illinois State Geological Survey. This data set contains Illinois Public Land Survey System (PLSS) boundaries and designations in line and polygon feature classes. THESE DATA HAVE P...

2. PLSS Townships: Illinois, 2003

1968. Illinois State Geological Survey. This dataset contains townships from the Illinois Public Land Survey System in line and polygon form. Line attributes identify state, township and ...

3. PLSS Indian Treaty Boundary Lines: Illinois, 2003

1968. Illinois State Geological Survey. This data set contains Indian Treaty boundary lines from the Illinois Public Land Survey System. The nominal scale is 1:62,500. As of 2003, the dat...

4. State Boundary: Illinois, 2003

1968. Illinois State Geological Survey. This data set contains the Illinois state boundary in line and polygon format. There are two versions of the data included: one that includes the o...

5. County Boundaries: Illinois, 2003

1968. Illinois State Geological Survey. This data set contains Illinois county boundaries in line and polygon formats. The polygon attribute data include county name and number (FIPS) des...

6. Indiana state of surprises.

1968. Includes index to points of interest on recto and col. ill. on verso. Scale not given.

7. Map of Marion County, Indiana showing highways & roads

1968. Prout, Joseph E., cartographer. "January 1, 1968." Scale approximately 1:60,000. Not "1" = 1/2 mile".

8. Purdue Campus: West Lafayette, Indiana, 1968

1968. Purdue University Libraries. The Purdue historical campus map collection was scanned and georeferenced by Purdue University Libraries. The physical maps were collected as Purdu...

9. Twin Cities Land Use Map from the Twin Cities Metropolitan Planning Commission, 1968

1968. Levinson, David M. and Chen, Wei. High-quality GIS land use maps for the Twin Cities Metropolitan Area for 1968 that were developed from paper maps (no GIS version existed previousl...