Print resources are mostly available in Pius Library.  Search the  Saint Louis Universtiy Libraries Catalog  by subject, Maps or Gazeteers and their subdivisions.  For geography of a specific region search by region name with geography as a subdivision or search for Maps or Gazeteers with the region name as a subdivision.   For example, Maps--United States, Geography--United States, United States--Geography, etc.

Cartographic Materials Page
http://www.lib.uwaterloo.ca/discipline/Cartography/cart.html
Created and maintained by Richard Pinnell, Head,  Universiity Map and Design Library at the University of Waterloo in Ontario, Canada.  Contains links to cartographic resources on the internet such as map libraries and collections of electronic maps as well as GIS resources.

Color Landform Atlas of the United States
http://fermi.jhuapl.edu/states/states.html
Produced by Ray Sterner (Space Oceanography Group, Applied Physics Laboratory, Johns Hopkins University), this site provides six maps for each state:  Shaded relief map, County map,  Black and white map, Satellite image, 1895 map (Big: 1.81 Mb, and a PostScript map all  scaled to fit the screen so the map scale varies from state to state.

Getty Thesaurus of Geographic Names Online
http://www.getty.edu/research/conducting_research/vocabularies/tgn/
Provided as part of the Getty Vocabulary Program of the Getty Research Institute, this Thesaurus of Geographic Names (TGN) allows you to enter a place name or browse the world for information about places.  Enter a place name and receive physical features, political entities, and sources for the information given.

Historical Maps Online
http://images.library.uiuc.edu/projects/maps/index.html
From the University of Illinois Library and University of Illinois Press, this collection of historical digitized maps contains maps from Illinois, Indiana, Kansas, Kentucky, Michigan, Minnesota, Missouri, and Wisconsin as well as maps of North America, the Northwestern Territory, Louisiana Territory, former colonies in North America, and more.

maps.com
http://www.maps.com/FreeStuff.aspx?nav=FF
Includes an online atlas with political and topological maps for countries worldwide, a world timezone map, weather maps, and maps games and puzzles.

Nationalatlas.gov
http://nationalatlas.gov
Use the MapMaker to draw your own map with the features you want. See average rainfall, crime statistics for a particular year, or distribution of a particular plant or animal and much more. Pre-formatted, printable maps are available as are articles on topics such as agriculture, biology, climate, environment, geology, government, history, mapping, people, transportation, and water.

National Geographic Map Machine
http://plasma.nationalgeographic.com/mapmachine/index.html
Provides maps for the world, continents, countries and states of the United States.  Information accompanying country maps include, the flag, area, population, capital, literacy rate, religion, life expectancy, and economy.  This information is taken from various 1995 and 1996 sources.

Oddens's Bookmarks : The Fascinating World of Maps and Mapping
http://oddens.geog.uu.nl/index.html
A very extensive collection of links to maps and mapping information available on the internet.  Created by Roelof P. Oddens at Utrecht University in the Netherlands, this site now seems to be updated and maintained by various faculty from Utrecht University.

Perry-Castaneda Library Map Collection
http://www.lib.utexas.edu/maps/
Collection of both historical and newer maps from the University of Texas at Austin.  Many of the maps were produced by the U.S. Department of State or the U.S. Central Intelligence Agency. Includes a link to Other Maps on the Web which is a list of links to other map services providing various types of maps.

TopoZone
http://topozone.com/default.asp
In cooperation with the USGS, this site provides every USGS 1:100,000, 1:25,000, and 1:24,000 scale map for the entire United States, Alaska (1:63,360), Puerto Rico (1:20,000), and Canada.  Appropriate for topographic map users and outdoor recreation enthusiasts.

U.S. Gazetteer
http://www.census.gov/cgi-bin/gazetteer
From the U.S. Government Census Bureau, this allows you to type in a place and get the population, location in longitude and latitude and zip code(s) of the place.  If you type in a zip code, you get the place name, population, and location in longitude and latitude.  You may choose to get a map of the area where you can then zoom in or zoom out and add features such as highways, railroads, etc.