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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.
Raster

Digital Orthophoto Quarter Quadrangle images for Pennsylvania penn-state

1999. United States Geologic Survey (USGS) and Pennsylvania Bureau of Topographic and Geologic Survey. Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophotoquad (DOQ) is a ...

11.

Orthophotography: Baltimore County, Maryland, 1998 maryland

1998. Baltimore County Web Map Portal. Orthophotography for Baltimore County from March/April 1998. This is not a complete data set and only covers the southern half of Baltimore County.

12.
Vector

PA Explorer: Terrabyte Image: Pennsylvania penn-state

1998. Wayne Myers. The Terrabyte images are extractives from Landsat Thematic Mapper images through the SpectraPlex process. This process does not permit the full res...

13.
Raster

WISCLAND Land Cover, Wisconsin 1998 (Grid) wisconsin

1998. Wisconsin Department of Natural Resources. This Grid-format data set, known as WISCLAND Land Cover, is a raster representation of land cover of Wisconsin derived from Landsat satellite image...

14.
Raster

WISCLAND Land Cover, Wisconsin 1998 (Image) wisconsin

1998. Wisconsin Department of Natural Resources. This tif-format data image of Wisconsin Land Cover illustrates the Level 2 land cover classification encoded in the Wisconsin Land Cover Grid. The ...

15.
Raster

Digital Orthophoto (DOQQ - quarter-quadrangle) for Delaware 1997 penn-state

1997. United States Geologic Survey (USGS) and Pennsylvania Bureau of Topographic and Geologic Survey. Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophotoquad (DOQ) is a ...

16.
Raster

Digital Orthophoto (DOQQ - quarter-quadrangle) for West Virginia 1997 penn-state

1997. United States Geologic Survey (USGS) and Pennsylvania Bureau of Topographic and Geologic Survey. Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophotoquad (DOQ) is a ...