I am at the moment enjoying the national (international) cowboy gathering in elko, nv, where there are many excellant yodellers
from 9 - 90 years old. Sourdough Slim, gary mcmahon, Wylie gustofson,
and many ohers are here thiws weekend. One the way here we listened to
http://en.wikipedia.org/wiki/Goebel_Reeves who claims to have taught
Jimmie Rogers and Woodie Guthrie to yodel. a.k.a "The Texas Drifter" he had a huge variety of yodelling styles he sang.