Harvard Map Collection
- One of the largest and oldest collections of cartographic materials in the United States.
- http://hcl.harvard.edu/libraries/#hmc

CountyMapsUSA.com
- Contains maps of several states broken down to county level, with major towns and cities shown.
- http://www.countymapsusa.com/

Windows Live Local
- Combines online mapping and local search, uses a scratch pad to take notes, and allows to search questions in a geographical context.
- http://local.live.com/

People and Places: United States
- Photos taken in each state within the US. Includes images of buildings, local animals and people.
- http://www.galenfrysinger.com/united_states.htm

Google Maps
- Interactive maps and satellite/aerial imagery of the United States.
- http://maps.google.com/

USGS Geography
- Home page for national mapping information from the U.S. Geological Survey.
- http://geography.usgs.gov/

National Wilderness Preservation System map
- Search the National Wilderness Preservation System by clicking on the map (628 areas).
- http://www.wilderness.net/index.cfm?fuse=NWPS&sec=map

Envirofacts Maps
- A service provided by the U.S. Environmental Protection Agency for displaying environmental information for the entire United States.
- http://oaspub.epa.gov/enviro/ef_home2.maps

John Macs USA
- Travel information and images, from travels in the United States.
- http://www.johnmacsusa.com

Mile by Mile
- Highway information site for travelers planning a driving vacation or road trip. Details points of interest along popular scenic driving routes.
- http://www.milebymile.com/main/United_States/

Earthshots: Satellite Images of Environmental Changes
- Earthshots is a collection of Landsat images and text, designed to show environmental changes and to introduce remote sensing.
- http://edcwww.cr.usgs.gov/earthshots/slow/tableofcontents

USGS Mapping Information
- Database query form for USGS Geographic Names Information System (GNIS).
- http://geonames.usgs.gov/pls/gnis/web_query.gnis_web_query_form

Federal Geographic Data Committee
- A database of geographic data from around the world.
- http://clearinghouse1.fgdc.gov/

ERsys.com
- Demographic, lifestyle, and economic data covering over 1300 US cities portrayed as thematic maps, informative reports, detailed tables and colorful charts.
- http://www.ersys.com/

Census Maps
- U.S. census statistics and maps.
- http://www.census.gov/datamap/www/

ViaGuide
- Information on roads, signs, and online maps.
- http://www.ugcs.caltech.edu/~jlin/links/

Tiger Map Server
- US Census Bureau Map Server that pulls up any location using latitude/longitude input. Useful for creating maps around located features.
- http://tiger.census.gov/cgi-bin/mapsurfer

The Perry-Castañeda Library Map Collection
- Maps of the United States at The University of Texas at Austin.
- http://www.lib.utexas.edu/maps/united_states.html

Map Collections Home Page
- A searchable collection of maps from the Library of Congress.
- http://memory.loc.gov/ammem/gmdhtml/gmdhome.html

National Highway System maps
- The National Highway System is a network of major highways linking most of the US.
- http://www.fhwa.dot.gov/hep10/data/data.html

TopoZone
- USGS topographic maps.
- http://www.topozone.com

Yahoo Maps
- An adequate tool for finding locations in the US. A nice feature: adds four digit extension to typed in zip codes.
- http://maps.yahoo.com/

The Map Base
- Free online aeronautical charts and links to free USGS topographical maps.
- http://mapbase.pair.com

Maptech MapServer
- Free online viewing of topo maps, nautical charts, aeronautical charts, and high altitude photography of the US and selected parts of the world.
- http://mapserver.maptech.com/

Citimaps
- Printable .pdf maps of Baltimore, Brooklyn, Liberty State Park, Long Island, Manhattan, Newport, and Philadelphia.
- http://www.citimaps.com/

County Map Project
- Life-long record of a geographer's travels in the United States, mapped at the county level. Includes information about each state.
- http://webhost.bridgew.edu/jhayesboh/COUNTIES/COUNTY.HTM

50states.com - Blank Outline Maps
- Printable outline map of each US State. Excellent homework helper.
- http://50states.com/maps/

Maps.com
- Provides driving directions, an online world atlas, a complete online map store, weather center and maps, and a geography fun center.
- http://www.maps.com/

Maps On Us
- Printable US maps, driving directions, and yellow pages search.
- http://www.mapsonus.com/

National Atlas of the United States
- A site for creating and querying national maps.
- http://www.nationalatlas.gov

Digital Atlas of the United States
- Continuing public education project of Professor William Bowen and the Department of Geography at California State University, Northridge.
- http://130.166.124.2/USpage1.html

Maps By You
- Customize U.S. maps of selected states for outdoor activities, with lakes, rivers, campgrounds, and places of interest.
- http://www.mapsbyyou.com/

Rare Map Collection
- The Hargrett Rare Books and Manuscripts Library at the University of Georgia maintains a collection of about 800 historical maps spanning nearly 500 years, from the sixteenth century through the early twentieth century.
- http://www.libs.uga.edu/darchive/hargrett/maps/maps.html

Panoramic Maps Collection
- The Panoramic Maps, 1847 - 1921, collection contains about 1,700 idealized schematic views of towns and cities; a wealth of detail in setting, streets, and buildings.
- http://lcweb2.loc.gov/ammem/pmhtml/panhome.html

Color Landform Atlas of the United States
- Outstanding collection of maps and images from the Johns Hopkins University Applied Physics Laboratory.
- http://fermi.jhuapl.edu/states/states.html