Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

Search Constraints

You searched for: Subject Imagery and Base Maps Remove constraint Subject: Imagery and Base Maps Time Period 1900-1949 Remove constraint Time Period: 1900-1949
Number of results to display per page
View results as:

Search Results

1.
Image

Aerial Photography - 1927 - 2016, Dakota County: Minnesota

1927-2016. Partial and County wide ortho photography at various pixel resolutions from a variety of years from 1927 - 2016. <a href="Summary.htm">Horizontal A...

2.
Aerial Photography Counties: Iowa, 1930s

Aerial Photography Counties: Iowa, 1930s

1930. Iowa Department of Natural Resources. 1930s Aerial Photography of Iowa County dataset in a zipped file.

3.
Aerial Photography Dates File: Iowa, 1930s

Aerial Photography Dates File: Iowa, 1930s

1930. Iowa Department of Natural Resources. This file contains a shapefile of the centroids of individual scanned photos, and the associated date.

4.
Mixed

ArcGIS REST Services Directory for Ashtabula County, Ohio

1938-present. ArcGIS REST site referencing layers for all common data types and more. Also contains aerial photography from 1938, 2006-2017 (4yrs). Contains refe...

5.
Mixed

ArcGIS REST Services Directory for Cincinnati, Ohio

1932-present. ArcGIS REST site referencing layers for all common data types and more. Also contains aerial photography from 1996-2017 (10yrs). Also references hi...

6.
Vector Created with Sketch.

Forest Cover Types - East Upper Peninsula: Michigan, 1939

1939. State of Michigan. 1939 Forest Cover Types - East Upper Peninsula.

7.
Vector Created with Sketch.

Forest Cover Types - Menominee County: Michigan, 1939

1939. State of Michigan. 1939 Forest Cover Types - Menominee County.

8.
Vector Created with Sketch.

Forest Cover Types - West Upper Peninsula: Michigan, 1939

1939. State of Michigan. 1939 Forest Cover Types - West Upper Peninsula.

9.
Mixed

GeoDataBase Files Downloads for Montgomery County, Ohio

1936-present. Montgomery County Auditor's Office. Website containing downloadable zip file (large > 1GB) containing all common geospatial datasets. Also contains aerial photography for selected ye...

10.
Raster

Historical Aerial Photography: Illinois, 1937-1947

1936-1941. Illinois State Geological Survey. The primary data set consists of historical black and white aerial photographs from Illinois acquired during 1936 to 1941. Alternative years of pho...

11.
Image

Historical Map Collection for Lancaster County: Pennsylvania

1900. Historical maps in TIFF format of Lancaster County.

12.
Raster

PennPilot (Historical Aerial Photo Library): Pennsylvania

1938 - 1980. Penn Pilot, a project sponsored by the Pennsylvania Geological Survey, is an online library of digital historical aerial photography for the Common...

13.
Mixed

Public FTP for Mahoning County, Ohio

1900-present. Mahoning County GIS Dept. FTP site containing downloadable datasets for parcels, boundaries, addresses, transportation, hydrology, land use, and more. Also contains aerial p...

14.
Purdue Campus: West Lafayette, Indiana, 1903

Purdue Campus: West Lafayette, Indiana, 1903

1903. The Purdue historical campus map collection was scanned and georeferenced by Purdue University Libraries. The physical maps were collected as Purdu...

15.
Purdue Campus: West Lafayette, Indiana, 1904

Purdue Campus: West Lafayette, Indiana, 1904

1904. The Purdue historical campus map collection was scanned and georeferenced by Purdue University Libraries. The physical maps were collected as Purdu...

16.
Purdue Campus: West Lafayette, Indiana, 1906

Purdue Campus: West Lafayette, Indiana, 1906

1906. The Purdue historical campus map collection was scanned and georeferenced by Purdue University Libraries. The physical maps were collected as Purdu...

17.
Purdue Campus: West Lafayette, Indiana, 1907

Purdue Campus: West Lafayette, Indiana, 1907

1907. The Purdue historical campus map collection was scanned and georeferenced by Purdue University Libraries. The physical maps were collected as Purdu...

18.
Purdue Campus: West Lafayette, Indiana, 1908

Purdue Campus: West Lafayette, Indiana, 1908

1908. The Purdue historical campus map collection was scanned and georeferenced by Purdue University Libraries. The physical maps were collected as Purdu...

19.
Purdue Campus: West Lafayette, Indiana, 1910

Purdue Campus: West Lafayette, Indiana, 1910

1910. The Purdue historical campus map collection was scanned and georeferenced by Purdue University Libraries. The physical maps were collected as Purdu...

20.
Purdue Campus: West Lafayette, Indiana, 1912

Purdue Campus: West Lafayette, Indiana, 1912

1912. The Purdue historical campus map collection was scanned and georeferenced by Purdue University Libraries. The physical maps were collected as Purdu...