Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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You searched for: Subject Imagery and Base Maps Remove constraint Subject: Imagery and Base Maps Time Period 1950-1999 Remove constraint Time Period: 1950-1999
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1.
1:250k Digital Raster Graphic - Collars Removed: Minnesota

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

1998. U.S. Geological Survey and Minnesota DNR and Minnesota Department of Natural Resources (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...

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Aerial Imagery (Doq) Grid: Michigan, 1992-1998

1992-1998. State of Michigan. Digital Ortho-Quadrangle grid for 1992 1998 aerial imagery acquisitions.

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Aerial Imagery Index Grid, 12-foot Resolution: Prince George's County, Maryland, 1998

1998. The Maryland-National Capital Park & Planning Commission.

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Aerial Imagery Index Grid, 1-foot Resolution: Prince George's County, Maryland, 1998

1998. The Maryland-National Capital Park & Planning Commission.

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Aerial Imagery Index Grid, 3-foot Resolution: Prince George's County, Maryland, 1998

1998. The Maryland-National Capital Park & Planning Commission.

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Aerial Imagery Index Points: Prince George's County, Maryland, 1965

1965. The Maryland-National Capital Park & Planning Commission. The Commission has purchased a set of black & white imagery paper prints for all of Prince George's County, Maryland. This GIS point layer is used ...

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Aerial Imagery Index Points: Prince George's County, Maryland, 1968

1968. The Maryland-National Capital Park & Planning Commission. The Commission has purchased a set of black & white imagery paper prints for all of Prince George's County, Maryland. This GIS point layer is used ...

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Aerial Imagery Index Points: Prince George's County, Maryland, 1972

1972. The Maryland-National Capital Park & Planning Commission. The Commission has purchased a set of black & white imagery paper prints for all of Prince George's County, Maryland. This GIS point layer is used ...

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Raster
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Raster

Aerial Photography 1996: Philadephia, Pennsylvania

1996. Philadelphia aerial photography.

11.
Aerial Photography: Carver County, Minnesota, 1991

Aerial Photography: Carver County, Minnesota, 1991

1991. Carver County, Minnesota. Carver County 2011 Imagery.

12.
Aerial Photography Counties: Iowa, 1950s

Aerial Photography Counties: Iowa, 1950s

1950. Iowa Department of Natural Resources. 1950s Aerial Photography of Iowa County dataset in a zipped file.

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Aerial Photography Counties: Iowa, 1960s

Aerial Photography Counties: Iowa, 1960s

1960. Iowa Department of Natural Resources. 1960s Aerial Photography of Iowa County Dataset in a zipped file.

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Aerial Photography Counties: Iowa, 1970s

Aerial Photography Counties: Iowa, 1970s

1970. Iowa Department of Natural Resources. 1970s Aerial Photography of Iowa Each zip file contains a county raster dataset.

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Aerial Photography Dates: Iowa, 1950s

1950. Iowa Department of Natural Resources. Zipped file Contains a dateset of the centroids, with dates, of the individual images used.

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Aerial Photography Dates: Iowa, 1960s

1960. Iowa Department of Natural Resources. This dataset is centroids with dates of the individual images used.

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Aerial Photography Dates: Iowa, 1970s

1970. Iowa Department of Natural Resources. This shapefile has centroids with dates of all images used in this dataset.

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Raster

Aerial Photography: Mifflin County, Pennsylvania

1995. Mifflin County - Laura H. McLaughlin. Mifflin County aerial photography.

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ArcGIS REST Services Directory for Lucas County, Ohio

1998-present. ArcGIS REST site referencing layers for parcels, boundaries, transportation, hydrology, utilities, and more. Also contains references to elevation ...

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Baist Index (1959): Washington, D.C., United States

1959. City of Washington, DC. The Baist Index provides a mapping index that mirrors the hardcopy index in the original Baist Map Volumes. The Index was hand digitized from the o...