I think I *may* have "She Taught Me to Yodel." I heard it myself in the late 40's (?) or early 50's I guess, loved it, have been looking for it. But it's going to take a real dig thru my tapes. E-mail me or Bill D (my husband, who gets on Mudcat a lot oftener than I do) if you haven't heard in a week or so.
Can you find and check a list of song titles on Kathy Fink and Marcy Marxer's CD's and tapes? They do a lot of good old yodeling songs.