I have uploaded Real Audio files for My Little Home In West Virginia and Frail Wildwood Flower. You will find them on this page at my site.
The version of the theme that I have is by the composer of the tune, Ellis Hall, with Bill Addis on guitar, but I would be nearly certain that the version Lee Moore played would have been by Cy Williams.
Frail Wildwood Flower is from 1928 by Miller Wikel. Though it was actually recorded a few days after the Carter version, it is far closer to the original.
As for my late night listening back in the late 40s to mid 50s when I went off to college and no longer had time for such, I did listen every now and then to WWVA, BUT my main listening stations were WLS and WJJD in Chicago, WCKY in Cincinnati, WLPO (LaSalle, Peru, Oglesby, IL), WBAP in Fort Worth, TX, XERF in Mexico, and of course, WSM in Nashville, TN. I imagine that the Chicago stations ~~ especially WJJD, and WCKY got more listening hours than the rest combined.