I found this when I was looking to see if I could fine elongated cent machines along my trip route. Very cool.

http://www.wcmassey.com/lep/hhg/states.htm


I know it's not totally complete because it was missing some from Minnesota, but it's a good reference.

It's neat. TEC also has a Yahoo group and a newsletter and folks that make their own dies and machines. Lots of fun. Remember to avoid the Zlincolns as the zinc gets exposed on squishing and discolors rapidly.