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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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Indiana University (14,884)
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LandScan Global Population Database (23)
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Pennsylvania State University (3,888)
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Princeton (1,004)
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Russian Military Topographic Map Collection (3)
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UM Matthaei Botanical Gardens and Nichols Arboretum (62)
UW Digital Collections Center (2,596)
UW-Madison Robinson Map Library (6,077)
University of Chicago (71)
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Wisconsin Geological and Natural History Survey (61)
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York County, PA GIS Open Data Portal (50)
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