WGLD FM in Oak Park, Illinois switched to a full time progressive rock format in January 1970.  Terry Hemmert who had a long career at WXRT began her professional career at the station. The first clip above features  Digby Welsh from Feb 6, 1971,  during the station’s progressive era.

WGLD switched to oldies and the second clip is from the oldies era and features Ross Brooks from Oct 25, 1973. A relatively early example of the oldies format on the radio.

These excellent examples of Chicago radio from the early 1970’s were contributed to the site by Tom Konard.