http://usacac.leavenworth.army.mil/CAC/csi/museum.asp
http://usacac.leavenworth.army.mil/CAC/csi/museum_TeacherGuide.asp
http://usacac.leavenworth.army.mil/CAC/csi/museum_TopographersGuide.asp
http://books.google.com/books?id=5im5iAPqy3UC&pg=PA7&lpg=PA7&dq=%22encyclopedia+of+the+west%22+topographic&source=web&ots=yxFshLir5u&sig=_QKCTKdi3g7XXs9xqk7k5QDHrWw#PPA10,M1
http://www.google.com/search?q=%22Matthew+F.+Maury%22+1802+Whale+Chart+Maps
http://www.answers.com/topic/matthew-fontaine-maury?cat=technology
http://www.answers.com/topic/stephen-harriman-long
http://www.nebraskastudies.org/0400/frameset_reset.html?http://www.nebraskastudies.org/0400/stories/0401_0111.html
http://www.answers.com/topic/western-united-states-1
http://www.google.com/search?q=%22Titian+Ramsay+Peale%22+%22Art+of+the+Long+Expedition%22
http://futurethought.pbwiki.com/Leavenworth
http://www.acctts.com/INterACCTTS/USD233_Fort-Leavenworth-history.htm
http://www.takitwithme.com/mymapshelp.html#url