Links that also have a lot of historical interest in the field of broadcasting are presented here.
A part of http://fybush.com that contains a lot of links of interest.
http://www.radio-locator.com/ Radio Locator is a very informative site for radio station info. This site is one of the resources used by History of Idaho Broadcasting to verify much of our information.
Radio Engineer Exchange
Rockwell Smith's personal website - Lots of historical stuff and some airchecks reside here.