Explorer project:
http://www.sjteach.org/exploration.html
http://www.allaboutexplorers.com/explorers
http://www.mrnussbaum.com/explorerroutemaps.htm (MAPS)
http://www.mrnussbaum.com/oldmaps.htm
http://www.mrnussbaum.com/explorersflash.htm
http://users.rcn.com/farrands/explorers.htm
David Livingstone: http://en.wikipedia.org/wiki/David_Livingstone
http://www.wholesomewords.org/biography/biorplivingstone.html
Anne Bancroft:
http://www.annbancroftfoundation.org/_root/index.php?content_id=5082
http://www.britannica.com/EBchecked/topic/51363/Ann-Bancroft
http://www.explorapoles.org/index.php?/polar_explorers/bancroft_ann/&uid=49
Ponce de Leon:
http://fcit.usf.edu/Florida/lessons/de_leon/de_leon1.htm
http://en.wikipedia.org/wiki/Juan_Ponce_de_Le%C3%B3n
http://www.win.tue.nl/~engels/discovery/ponce.html
Sacagawea
http://en.wikipedia.org/wiki/Sacagawea
http://www.pbs.org/weta/thewest/people/s_z/sacagawea.htm
http://www.pbs.org/lewisandclark/inside/saca.html
Marco Polo
http://en.wikipedia.org/wiki/Marco_Polo
http://geography.about.com/cs/marcopolo/a/marcopolo.htm
http://www.silk-road.com/artl/marcopolo.shtml
Theodore Roosevelt:
http://en.wikipedia.org/wiki/Theodore_Roosevelt