Samuel Preston Bayard was a folklorist and musicologist who collected songs, fife tunes and fiddle tunes from 1928 to 1963. He recorded selections from several Rural Valley area people. His work is archived at Pennsylvania State University, and some of the selections he collected are available on YouTube.
Mabel Black's Songs. Mabel Black introduces herself on the recording as a Dayton resident. She is possibly the same Mabel Black who taught in Rural Valley, as per the 1940 census.
A. J. Hogg's Fiddle Tunes. A. J. (Arthur Jesse) Hogg taught in Armstrong County for years, and was principal of Rural Valley High School.