I have very little country music although Patsy Cline and Hank Williams immediately come to mind. Unfortunately both passed on before the 1970s.
Last year a friend brought an album that sounded so good I searched it out and bought a copy. Bob Wills and his Texas Playboys, "For The Last Time."
This is exactly the period you mention, recorded Dec, 1973 in Dallas, TX.
This album makes me laugh out loud every time I hear it, a combination of the unrestrained joy of the performers combined with unexpected lyrics.
Bob Wills Sample MP3
This kind of music will not appeal to everyone but my diverse love for music found a spot for it. If your an LP guy, the original is a two LP box set, United Artists UA-LA 216J2 (0998)