Perry-Castañeda Library Map Collection: Large collection of political, physical, and historical maps for the US and the world; also includes nice selection of other map sites on the Internet.
ThoughtCo.: Navigate the world from home with these maps of cities, states, countries, and the world. Find geographic models of all types, including physical, topographic, road, and street maps.
National Atlas: Atlas of the United States; find pre-formatted maps or customize your own
Atlas of Canada: Includes Canadian-specific maps of the environment, people & society, economy, history, climate change, freshwater and health
Geographic Names Information System from the USGS: Search for physical and geographical features in the US; entry gives latitude and longitude and links to available USGS and other government maps for that feature or place (including topographical maps)
Google Maps: Search for a specific address or locations in the US; click and drag the map to find areas; satellite views of maps are available
CIA World Factbook: Each entry contains information on the geography, people, government, economy, communications, transportation, military, maps, and flags of the country.
U.S. Department of State: Search by "Countries & Areas" to find information produced by the U.S. State Department. Each entry contains information on the land, people, history, government, and economy of the country.
Country Studies: Produced by the Library of Congress, these studies include the history, society, economy, government, and national security of select countries.
OpenGeography.org: Collection of links and resources for geography including; physical geography, human geography, environmental geography, as well as geospatial technology, open education, and professional organizations.
NASA Earth Observatory: Find satellite images and data on the Earth with an emphasis on climate and environmental change.
Topozone.com: View USGS topographic maps; search by location name or latitude/longitude; some services require a TopozonePro subscription.
Topographical Map Symbols: Learn about topographical maps and the symbols they use in this publication from the United States Geological Service (USGS)