Just found this list not too long ago. Was going to email it to Andy but figured I might as well post it for everyone.

http://www.dimayz.com/files/atc.pdf

I wish I would of found this earlier, would save me a lot of time trying to dig for these numbers - once spent a good half a day trying to get a number for ATL tower, called everyone from Atlanta FSDO to FAA media relations person in Atlanta.

I found a lot of facilities, especially at smaller airports, still pretty open to giving tours as long as you give them a few days notice and they don't have anything else going on.

Happy hunting everyone! :)

Dima

EDIT: typo