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Center for Ancient Middle Eastern Landscapes, Institute for the Study of Ancient Cultures, University of Chicago (8,792)
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Humanitarian Data Exchange (6,701)
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Indiana University (14,884)
IndianaMap (378)
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Kenosha County, WI GIS Open Data Portal (31)
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LandScan Global Population Database (23)
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Maryland National Capital Parks and Planning Commission (1)
Maryland iMap (1,256)
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Michiganology (2,466)
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Minnesota Geospatial Commons (996)
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Minnesota Legislative Coordinating Commission - Geospatial Information (LCC-GIS) (27)
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National Renewable Energy Laboratory (1)
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PHLmaps (323)
Pennsylvania Department of Conservation and Natural Resources Open Data Portal (57)
Pennsylvania Department of Environmental Protection (148)
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Pennsylvania State University (3,888)
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PolicyMap (387)
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Prince George's County Open Data Portal (13)
Princeton (1,004)
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Ramsey County Open Data (36)
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Russian Military Topographic Map Collection (3)
Rutgers University-New Brunswick (4,554)
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Summit County GIS Data (31)
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The Newberry Library (53)
The Ohio State University (255)
Three Rivers Park District Open Data (5)
U.S. Department of Agriculture (1)
U.S. Fish and Wildlife Service Open Data (1,987)
UM Matthaei Botanical Gardens and Nichols Arboretum (63)
UW Digital Collections Center (2,596)
UW-Madison Robinson Map Library (6,077)
University of Chicago (71)
University of Chicago Library GIS Data Hub (34)
University of Illinois Urbana-Champaign (2,501)
University of Iowa (3,595)
University of Maryland (274)
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University of Minnesota (5,995)
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Waukesha County GIS Download (45)
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Western Pennsylvania Regional Data Center Open Data (52)
Wilkin County, Minnesota Open Data (17)
Wisconsin Geological and Natural History Survey (61)
Wisconsin Rapids Online Map Portal (18)
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WisconsinView (2,170)
Wood County Open Data Portal (13)
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York County, PA GIS Open Data Portal (50)
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