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Data & Resources

Featured resource: Big Ten Alliance Geoportal


A collaborative project to provide discoverability, facilitate access, and connect scholars across the Big Ten Academic Alliance to geospatial data resources.

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McKeldin Map Collection

The map collection at McKeldin Library is located on the fourth floor.  We have over 350,000 maps, most of which were produced by U.S. government agencies and came to us through the Federal Depository Library Collection.  Coverage includes all of the U.S. states, most of the U.S. territories and possessions, and some areas outside of the United States.

Maryland Maps

Find these in the Maryland Room at Hornbake Library or via the Maryland Map Collection website.

Map Databases

Foreign Maps

Digitized maps

Earth sciences

Human geography

Interdisciplinary

  • NASA Earth Data – Gridded atmosphere, cryosphere, human dimensions, land, and ocean datasets
  • Natural Earth Data – Administrative boundaries, transport, urban, time zones, parks, coast, hydrology, land cover features, and base map data at three available scales
  • United Nations Food and Agriculture Organization -  Administrative boundaries, agriculture, base maps, resources, climate, health, hydrology, land cover/use, population, edaphic, and topographic data
  • Diva GIS - Administrative, transportation, elevation, land cover, population, and gazetteer data by country