From the MCRFB archive files:
THE TOP 35 HITS ON WXYZ ON THIS DATE IN 1966
WXYZ 1270 Detroit Sound Survey; No. 09 issued June 13, 1966 under Lee Alan, Program Director; WXYZ
(WXYZ 1270 Detroit Sound Survey for June 13, this date 1966; survey courtesy the Jim Heddle Collection. For the previous weekly WXYZ June 6, 1966 survey click here).
The Tidalwaves are still there at #10.Farmer John sold an unbelievable 50,000 copies in June 66 in the Detroit market .Too bad they didn’t have national distribution from SVR Records.