- Mapmaker Interactive - National Geographic's interactive map website.
- National Atlas of the United States - Interactive on a variety of topics such as ethnicity, crimes, agriculture. Arranged by continent and then by region. Of special note are the economic and physical summary pages. For example, the economic summary lists the GNP, inflation rate and daily calories per capita. Also, maps on population distribution, temperature and precipitation.
- Google Maps Zoom in to any U.S. location or retrieve driving directions between two addresses (or two street intersections or two towns). Display options include a generic street map, a street map underlaid by aerial photography, and in some cases an oblique view.
- 50 States: 50states is the best source of free maps for the United States of America. It also provide free blank outline maps for kids, state capital maps, USA atlas maps, and printable maps.
OU Campus Map
Campus Map: This website provides directions to OU, as well as information about the Bear Bus and its map, OU locations in Macomb County, parking, and printable maps.
Online Historical Atlases
- Historical Atlas of the Twentieth Century.
- University of Texas Map Collection - This is the best source for historical maps and information.
- Map Library - From West Point, this site is good for wars.
- National Geographic's MapMachine - Good for battles among other historical maps. Use the navigation bar on the left and click on "historical map."
- Map Collections: 1500-2002 - From the Library of Congress, this is good for cultural, transportation, battles, and cities and towns.
- Maps Online - Identifies several key collections of historical maps.
- Pre 1900 Map Collection - Beinecke Digital Library - This digitized collection is from Yale University and contains maps before 1900.
- USGS Site: Historic maps search by sheet name: This provides access to all scales (1:24,000 through 1:250,000) but you must know the sheet name. It will download as a .zip file but will unzip into a PDF