Lakes
http://seagrant.wisc.edu/glaciers/Home/tabid/36/Default.aspx
http://en.wikipedia.org/wiki/Great_Lakes
http://www.great-lakes.net/lakes/
http://www.great-lakes.net/infocenter/images/webcams.html
http://www.great-lakes.net/lakes/
http://terrypepper.com/lights/