I don't know if anyone has mentioned this or not, but there is a website online talking about telephone exchange names and their histories. It gives all kinds of info like how they once defined neighborhoods and their is even a redirect link to a list of exchange names. Very helpful for making up number cards or just finding out what your current number would have been in the days of yore. Very cool
http://ourwebhome.com/TENP/TENproject.html ( dead link )
here is the exchange name link
http://ourwebhome.com/TENP/Recommended.html ( dead link )