Another entry in the 1940s radio series, "The Ballad Hunter", produced by the Library of Congress and featuring John Lomax and field recordings of American folk music.
"Blues and Hollers" is program number 2 from the series, matrix number MS 063262. This episode of the series includes recordings from Livingston, Indiana; Raleigh, North Carolina; Oklahoma and other locations. Songs heard include "I'm Gwine to Texas", "Two White Horses", and a discussion of the blues by Woody Guthrie.
You can read more specifics about the episode, including names of songs and singers in the show, at the Library of Congress website.