http://www.win.tue.nl/~engels/discovery/alpha.html
Look up your explorer by his last name, here.
http://www.win.tue.nl/~engels/discovery/balboa.html
http://www.win.tue.nl/~engels/discovery/cabot.html
http://www.enchantedlearning.com/explorers/page/c/columbus.shtml
http://www1.minn.net/~keithp/
http://www.mnc.net/norway/ericson.htm
http://cybersleuth-kids.com/sleuth/History/Explorers/Francisco_Coronado/
Lots of links about Coronado are here.
http://www.hyperhistory.net/apwh/bios/b4hcortez_p1jf.htm
http://www.iol.ie/~jomerps/HomePage/Projects/World_Explorers/Vasco_Da_Gama.html
http://www.enchantedlearning.com/explorers/page/d/desoto.shtml
http://www.springfield.k12.il.us/schools/springfield/eliz/SirFrancisDrake.html
http://www.mnc.net/norway/ericson.htm
http://www.esd.k12.ca.us/Matsumoto/TM30/history/Explorers/fmag.html
http://www.bruce.ruiz.net/PanamaHistory/francisco_pizarro.htm
http://www.studyworld.com/Amerigo_Vespucci.htm