Here's a challenge - can you find "Pennsylvania Turnpike" by Dick Todd? It was a #1 on WRCP's "Country Power Music Guide" in 1968 and was played nationally. I haven't heard it for years but still remember some of the lyrics: "Pennsylvania Turnpike, I love you so, all the way from Jersey to Ohio, oh how I long for the beautiful mountains, and the fields of grass, and the friendly roadstands, where we eat and get gas...". Lowell Howard, original morning man at WEEZ in the '60's had a classic country show in the '90's on WSSJay - I called him and requested it but he loved the song but didn't have a copy, he said they didn't take care of the records on WEEZ and didn't keep the library.
I think people forget just how many country crossovers there were in the '50's to '70's, Johnny Cash, Marty Robbins, Patsy Cline, Brenda Lee, Charley Pride, Ferlin Husky, Hank Locklin, The Browns, Glen Campbell, Kenny Rogers, etc. so many classic country songs are familiar even to those who didn't listen to country radio.