• AGI GIS Dictionary
• Dictionary of Abbreviations and Acronyms in Geographic Information Systems, Cartography and Remote Sensing
• USGS Geographic Information Systems

Street/Road Maps and Aerial Photographs

• MapQuest
• MapTech’s MapServer
• Microsoft TerraServer

Data Maps

American FactFinder

Click on “maps” instead of “tables” under Basic Facts and get census data mapped to your specifications.

EPA Environmental Atlas

Browse maps depicting air quality, water quality and land use features for the US and states.

GeoSource

GeoSource is a collection "web resources for human geography, physical geography, planning, geoscience and environmental science."

Ground Water Atlas of the United States

A United States Geological Survey website with maps and data on ground water resources.

MapMachine@National Geographic.com

Explore the United States and the World through physical maps, political and cultural maps, climate and weather maps and historical maps.  Also includes street maps and atlases, Mars imagery and maps of the world’s ecoregions.

Minnesota Legislature, Interactive Maps

Click on a map to find legislative districts and school districts in Minnesota, view election results and redistricting plans and find the area of a Minnesota lake.

National Atlas of Canada

View maps representing Canada’s environment, people and culture, history, economy and environment.

National Atlas of the US

The interactive maps feature lets you pick the data layers you want to apply to a map of the United States or a particular state.

Wisconsin DNR Webview

Use webview to create maps of trails, land cover, wildlife management units and other information.

WisStat

Find data based on census statistics and create maps illustrating the data for the state, counties, or municipalities.

Maps and Data Sets for Sale or Free Download

GeoData.gov

Find data from federal government agencies that can be mapped using ArcView or other GIS software.

Geography Network

Order maps and data sets for use in ArcView or ArcExplorer software.

USGS Earth Explorer

Order prints, CD-ROMs, DVDs and downloadable files of aerial photos and maps.

Wisconsin Land Information Clearinghouse

Find data from Wisconsin State Agencies that can be mapped using ArcView or other GIS software.