This newspaper article is from early 1975...as Vic Rumore arrived at WKGN!
Page 3...
"The last time WIVK-FM was not #1 was the April/May 1980 Arbitron book, when WEZK had a 19.9 share to WIVK-FM's 19.7. I have every ARB report for the market since they started surveying it in 1970. Would love to see some of the old Pulses though if anyone's got any copies to share!" (Chris Huff)