A History of the NW Coast
http://www.hallman.org/~bruce/indian/.www.html
Historical descriptions of the Indians of the Pacific Northwest

Mountain Men and the Fur Trade
http://www.xmission.com/~drudy/amm.html
An extensive collection of documents from the fur trade in the Rocky Mountains, mainly dating from 1810 to 1840

Rare Map Collection - Union and Expansion
http://www.libs.uga.edu/darchive/hargrett/maps/expand.html

The Jesuit Plantation Project: Maryland's Jesuit Plantations, 1650-1838
http://www.georgetown.edu/departments/amer_studies/coverjpp.html
Text and images of documents describing the Jesuit plantations in the 1820s and 1830s. Includes a Jesuit's defense of slavery.