Growing up in the lower eastern shore of MD (Del-Mar-Va Peninsula) was somewhat isolated, especially for R&R music in the 50's & 60's. Any radio station which changed its genre to R&R usually lasted no more than 6 mos. if that. yes, we got some top 40 which was a mixed bag with some "softer rock" which didn't disturb the cattle or the chickens and the older citizens (advertisers) the good stuff usually came by word of mouth. Because the AM signal can carry 1000 miles under the right weather conditions, we could often get WLS or WKBW at night. And having my 1st car at 16 I spent many miles listening to WKBW at night since it seemed to come in more than others
http://wkbwradio.com/
http://wkbwradio.com/