Here are some other sites I've found helpful.

http://museum.gov.ns.ca/mnh/nature/Salamand/yspot.htm
http://www.ohiokids.org/kids/ohc/nature/animals/reptile/spottedsalamander.html
http://www.snakesandfrogs.com/scra/salamanders/spotds.htm
http://www.npwrc.usgs.gov/narcam/idguide/ambymacu.htm
http://www.uga.edu/srel/spotted_salamander.htm