Well, perhaps my poor confused mind is even more confuzzled than I thought - maybe this was not, in fact, the record I originally sought. I did also find one called, I think, Black & White Hillbilly in my more recent search, though I'm a bit hazy about whether it's only harmonica music or both harmonica and other stuff like vocals.

Holy God, everyone's very narky about this! I'm sorry if I've put people to unnecessary trouble, but is it necessary to get so exercised about it?