I'm looking for archives of a lot of old shows (I've got dozens of different ones), including WMAQ, WENR (those were in Chicago), WLS, WGN (the last one especially), KHJ Los Angeles, ABC net, and more. Most of the shows I'm looking for were in the thirties and fourties--in fact, I think all of them were. Do any of you know how I could go about finding and acquiring archives of these shows? I'm' pretty new to radio.