1973 Wisconsin Blue Book lists a WNRR in Neenah, WI. This guy's LinkedIn page says that he was a weekend jock on WNRR in Appleton, WI in the late 1960s. Both the 1968 and 1969 Broadcasting Yearbooks don't show a WNRR in their alphabetical list of all call letters. A current check for stations licensed to these two cities don't show any that are close to the 98 FM frequency. Anybody know what frequency, format and city of license this sticker is from?
UPDATE: See comments.