Here is a great website that has archived surveys, airchecks and other information on SF Bay Area radio stations. http://www.bayarearadio.org/
This is the KSOL SOUL TWENTY POWER survey dated Sept. 15, 1970 [[I've never tried this, so I hope it works, if not go to the above website)
BTW, KSOL was one of two Bay Area stations where deejay Sylvester Stewart worked in the sixties.
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