Joe Rogers began his radio career at WBCN FM in Boston in 1968. He used the name Mississippi Harold Wilson there.  He moved to  KPPC FM in Los Angles in 1971 and the used the names Mississippi Fats and also Mississippi Brian Wilson.

This folk-centric air check from Joe at KPPC is very low fidelity but gives you a good taste of the counter-culture programming emanating from free form radio at the time. Joe plays Neil’s Young’s Last Trip to Tulsa  and I think I heard the track played at around the very same time on WYSL FM by David Khan in my back yard.  I clearly remember that as it was the first time I had heard the track from Neil Young’s first solo album released about two years earlier. A rather intriguing track with strange lyrics,  the likes of which I had not heard before and such was clearly a part of the appeal of free form radio for me.