I listened to WLS, too - down here in Dallas! Only at night and the weather had to be right. 1967-69 time frame. It would be interesting to see how many of us listened to WLS and where we were located.
Interestingly, there was a station in San Antonio which also came in clear here in the Florida Panhandle.
I would listen to the Houston Astros on it.
WLS
late sixties at night time, here in MS
crystal clear
The only time I would switch away from 89 was to go "Beeker Street" with Clyde Clifford on KAAY Little Rock, also loud & clear at night in MN.
Great radio days, golden age of pop and rock.