Historical maps

http://www.eduplace.com/ss/maps/usa.html

http://xroads.virginia.edu/~MAP/terr_hp.html

http://nationalatlas.gov/natlas/natlasstart.asp

http://www.digitalhistory.uh.edu/maps/maps.cfm

http://www.ku.edu/history/VL/USA/maps.html

http://www.learner.org/biographyofamerica/prog10/maps/ (free and slave states)

http://xroads.virginia.edu/~MAP/map_hp.html

http://www.lib.utexas.edu/maps/histus.html

historical maps: http://xroads.virginia.edu/~MAP/map_hp.html#geo

Territorial maps (territorial expansion): http://xroads.virginia.edu/~MAP/terr_hp.html

Cities and states

http://www.mapquest.com/

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Territorial acquisitions of the United States

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The townships and sections of the land Ordinance of 1785
 

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AL - Alabama AK - Alaska AZ - Arizona AR - Arkansas CA - California CO - Colorado CT - Connecticut DE - Delaware FL - Florida GA - Georgia HI - Hawaii ID - Idaho IL - Illinois IN - Indiana IA - Iowa KS - Kansas KY - Kentucky

LA - Louisiana ME - Maine MD - Maryland MA - Massachusetts MI - Michigan MN - Minnesota MS - Mississippi MO - Missouri MT - Montana NE - Nebraska NV - Nevada NH - New Hampshire NJ - New Jersey NM - New Mexico NY - New York NC - North Carolina ND - North Dakota OH - Ohio OK - Oklahoma

OR - Oregon PA - Pennsylvania RI - Rhode Island SC - South Carolina SD - South Dakota TN - Tennessee TX - Texas UT - Utah VT - Vermont VA - Virginia WA - Washington WV - West Virginia WI - Wisconsin WY - Wyoming   DC - District of Columbia

1-Columbia R. 2- Snake R. 3- Missouri R. 4- Mississippi R. 5- Ohio R. 6- Cape cod 7 - Long Island 8- Chesapeake Bay 9 - Cumberland Gap 10-Tennessee R. 11 - Red R. 12- Canadian R. 13 - Arkansas R. 14 - North Platte R. 15 - South Platte R. 16 - Rio Grande 17 - Pecos R. 18 - Gila R. 19 - Hoover Dam; Lake Mead 20 - Grand Canyon 21- Glen Canyon Dam;  Lake Powell 22 - Colorado R. 23- Great Salt Lake 24- Green R. 25- South Pass

http://www.learner.org/biographyofamerica/prog10/maps/