Dmitry's+Helpful+Links

http://en.wikipedia.org/wiki/Lousiana_purchase

http://www.gatewayno.com/history/LaPurchase.html

http://www.nps.gov/archive/jeff/LewisClark2/Circa1804/Heritage/LouisianaPurchase/LouisianaPurchase.html

http://www.britannica.com/eb/article-9049100/Louisiana-Purchase