I've seen the Bay Area Radio Museum blogs about Harold Camping selling 106.9 FM to CBS in trade for KFRC "The Big 610" and I seen the famous case in the 1970's when CBS bought 97.3 from Camping and CBS sold 98.9 to KMPX so Camping can get 106.9. Where can I find the Documents that prove that CBS has bought some of the Camping Stations in other cities besides San Francisco.