Early American Westward Expansion How we view Land and Nature 
(1800-1850)
Map Analysis
Ohio River
Map Analysis
Land Division
View from Mount Holyoke
Northampton, Massachusetts, after a Thunderstorm
The Oxbow, 1836
Thomas Cole
Land and Native Peoples
Iowa and Illinois
Railroad
Conservation Movement
Manifest Destiny
http://tinyurl.com/rxwwqn
A map of Wayne & Pike counties, Pennsylvania (1814)
http://tinyurl.com/pcsbuz
La Tourrette's reference map of the state of Louisiana (1848)
http://tinyurl.com/o3z339
New map of Texas : with the contiguous American & Mexican states (1835)
http://tinyurl.com/olqvsq
Rail road and county map of Illinois showing its internal improvements (1854)
http://hdl.loc.gov/loc.gmd/g4100.rr002020
Map of Illinoise [sic] / constructed from the surveys in the General Land Office and other documents by John Melish.
http://hdl.loc.gov/loc.gmd/g4100.ct000892
Johnson's new railroad and township copper-plate map of Illinois, Iowa, & Missouri, from the latest and best authorities. - New York, 1859, c1857.
http://hdl.loc.gov/loc.gmd/g4061p.rr001240
How the public domain has been squandered (1884)
http://tinyurl.com/q9bxfv
Address delivered before the Agricultural society of Rutland County, Sept. 30, 1847 (pp 18-19). By George P. Marsh
http://tinyurl.com/plj96c
American Progress George A. Crofutt:
http://tinyurl.com/ljdsfc
http://tinyurl.com/losw4e