Map Collection: National, Regional and State Mapping Agencies

National

• USGS: U.S. Geological Survey - Highly useful for monitoring USGS programs in the areas of biology, geology, water, and mapping. The "Highlights" section is particularly valuable for tracking the Survey's changing uses of cartography.
• Natural Resources Canada 
• Servicio Geologico Mexicano

Regional

• Association of American State Geologists: State Geological Surveys
• Great Lakes Information Network

State

• AZGEO Data Hub
• Illinois State Geological Survey
• Indiana Geographic Information Council
• Indiana Geological and Water Survey
• Iowa Geological Survey
• Michigan Department of Natural Resources: General Land Office Plats
• Michigan Geological Survey
• Minnesota Geological Survey
• Minnesota Geospatial Information Office
• Missouri Department of Natural Resources: Division of Geologt and Land Survey
• Ohio Department of Natural Resources: Division of Geological Survey
• Wisconsin Geological and Natural History Survey
• Wisconsin State Cartographer's Office