| Actual Lewis and Clark Journal Entry | http://www.pbs.org/lewisandclark/archive/idx_jou.html |
| Map of Lewis and Clark expedition | http://staff.washington.edu/~muzi/LC/LCmap.html |
| Interactive expedition with Lewis and Clark | http://www.nationalgeographic.com/features/97/west |
| Davy Crockett | http://americanwest.com/pages/davycroc.htm |
| Davy Crockett | http://lsjunction.com/people/crockett.htm |
| Davy Crockett | http://www.infoporium.com/heritage/crockbio.shtml |
| Daniel Boone | http://berksweb.com/boonetext.html |
| Daniel Boone | http://xroads.virginia.edu/~HYPER/HNS/Boone/chronology.html |
| Jane Adams | http://www.americaslibrary.gov/cgi-bin/page.cgi/aa/activists/addams |
| Lesson 10 photos | http://www.archives.gov/exhibit_hall/picturing_the_century/galleries/newcent.html |
| Kitty Hawk Clip | http://www.pbs.org/wgbh/amex/wright/glider.html |
| Inventors | http://inventors.about.com/library/inventors/bl_history_of_communication.htm |
| Inventors | http://www.enchantedlearning.com/inventors/ |
| Inventors | http://web.mit.edu/invent/i-archive.html |