http://www.sfmuseum.org/hist8/ppoint.html
http://teachers.henrico.k12.va.us/specialist/franceslively/lessons/grade6/bracelet6.htm
http://memory.loc.gov/learn/lessons/99/fear/intro.html
http://www.leeandlow.com/teachers/guide1.html
http://www.pbs.org/wgbh/amex/eyesontheprize/tguide/elem.html
http://www.kimskorner4teachertalk.com/readingliterature/genres/historical/baseball_saved_us.htm