Map Collections in the Marriott Library: Maps on the Web
Online Maps
http://store.usgs.gov/ (Use the "Map Locator & Downloader" and zoom in to the area of interest to find quadrangles to download.)
The latest edition for those topographic sheets that include U.S. Forest Service lands can be found at the Forest Service website:
http://data.fs.usda.gov/geodata/
Click on the image of a US map on the right, then on the next page click "topographic maps." An interactive map will appear, and you can zoom into the area of interest and select a map sheet to download the most recent version of the topo map.
http://ngmdb.usgs.gov/ngmdb/ngmdb_home.html
Also from USGS: find and purchase or download satellite imagery and aerial photography at:
https://earthexplorer.usgs.gov/
http://geology.utah.gov/maps/topomap/index.htm
The National Geologic Map Database, a portal to geologic mapping by federal, state, and university agencies:
http://ngmdb.usgs.gov/ngmdb/ngmdb_home.html
The Nautical Charts from the National Oceanic and Atmospheric Administration:
https://nauticalcharts.noaa.gov/
The federal government began phasing out paper maps in 2019. Historical maps are still available for printing at:
https://historicalcharts.noaa.gov/
Weather Alert! See current maps from the National Weather Service:
https://collections.lib.utah.edu/search?facet_setname_s=uum_sfim
The ALA Map and Geospatial Information Round Table (MAGIRT) has a Registry of map scanning projects at various libraries throughout the country, including where to find Sanborn maps from other states: http://mapregistry.library.arizona.edu/
The David Rumsey Historical Map Collection at Stanford University:
The Perry-Castaneda Library at the University of Texas at Austin includes more than 250,000 maps from around the world, digitized and available to be downloaded:
http://www.columbia.edu/itc/mealac/pritchett/00maplinks/index.html
The Gulf/2000 project: Maps of the
http://gulf2000.columbia.edu/maps.shtml
Wikimedia Commons, Religion maps of the world
http://commons.wikimedia.org/wiki/Category:Religion_maps_of_the_world
TeachSpatial, from The Center for Spatial Studies at the University of California, Santa Barbara
http://www.teachspatial.org (A web portal providing access to:
* Digital resources for teaching spatial concepts and principles, especially at the undergraduate level
* Tools to help educators and researchers explore spatial perspectives within disciplines, as well as facilitate the development of cross-disciplinary spatial learning objectives)