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2000-2004
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Datasets (2,477)
Imagery (700)
Maps (190)
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Aerial photographs (1)
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Geological maps (2)
Image data (14)
Line data (66)
Mine maps (1)
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OpenIndexMaps (2)
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Baltimore County Open Data Portal (8)
CMAP (Chicago Metropolitan Agency for Planning) Data Hub (1)
Center for Ancient Middle Eastern Landscapes, Institute for the Study of Ancient Cultures, University of Chicago (695)
City of Chicago Data Portal (4)
Cook Central (9)
Cook County Open Data (6)
Cornell (169)
Delaware Valley Regional Planning Commission (DVRPC) (1)
Evansville, Vanderburgh County, Indiana Open Data Collection (1)
Franklin County Auditor, Ohio Open Data (2)
GEOhio Spatial Data Discovery Portal (1)
GIS Data Downloads for Erie County, Ohio (2)
GIS Data Downloads for Geauga County Auditor, Ohio (26)
GIS Data Downloads for Queen Anne's County, Maryland (13)
GeoDa Data and Lab (14)
Harford County Planning and Zoning Open GIS (2)
Harvard (53)
Humanitarian Data Exchange (454)
Indiana University (7)
IndianaMap (6)
LandScan Global Population Database (5)
Linn County, Iowa Open Data Portal (2)
Lorain County GIS Data (1)
Maryland iMap (15)
Milwaukee County GIS Download (2)
Minnesota Geospatial Commons (12)
Minnesota Geospatial Information Office (MnGeo) (14)
Minnesota Legislative Coordinating Commission - Geospatial Information (LCC-GIS) (4)
Montgomery County Open Data (4)
Natural Resources Research Institute (1)
New Jersey Department of Environmental Protection's (NJDEP) Bureau of GIS (8)
New Jersey Geographic Information Network (NJGIN) Open Data Portal (1)
Oakland County, MI Open data (2)
Omaha/Douglas County GIS Open Data Portal (9)
Open Data DC (10)
Open Data Minneapolis (1)
OpenDataPhilly (3)
PHLmaps (10)
Pennsylvania Department of Conservation and Natural Resources Open Data Portal (1)
Pennsylvania Spatial Data Access (PASDA) (236)
PolicyMap (117)
Prince George's County GIS Open Data (13)
Purdue University (5)
Rutgers University-New Brunswick (8)
Sarpy County GIS Portal (4)
SimplyAnalytics (2)
Social Explorer (48)
St Mary's County GIS Downloadable Layers (1)
Stanford (1,098)
Stark County GIS Data (7)
State of Michigan Open Data Portal (2)
Summit County GIS Data (1)
The Ohio State University (4)
U.S. Fish and Wildlife Service Open Data (4)
UM Matthaei Botanical Gardens and Nichols Arboretum (1)
UW Digital Collections Center (10)
UW-Madison Robinson Map Library (52)
University of Iowa (2)
University of Michigan (1)
University of Minnesota (116)
University of Nebraska-Lincoln (2)
Waukesha County GIS Download (1)
Western Pennsylvania Regional Data Center Open Data (1)
Wisconsin Geological and Natural History Survey (4)
WisconsinView (47)
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