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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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66.

Orthophotography: Baltimore County, Maryland, 1995 maryland

1995. Baltimore County Web Map Portal. Orthophotography for Baltimore County from March/April 1995. This is not a complete countywide dataset and only includes the eastern portion of Bal...

67.

Orthophotography: Baltimore County, Maryland, 1996 maryland

1996. Baltimore County Web Map Portal. Orthophotography for Baltimore County from March/April 2017. This is not a complete countywide dataset and only includes central and western Baltim...

69.

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.

74.
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...

75.
Polygon

Streams and Shorelines: Illinois, 2004 illinois

1994. Illinois Department of Natural Resources and Illinois State Geological Survey. This dataset contains data representing streams and shorelines in Illinois and portions of surrounding states as derived from US Geological Survey ...

78.
Raster

Topographic Maps (DRG) for Pennsylvania 1:24,000 - UTM penn-state

1996. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...