Anyone know the lyrics to a song called "Pecos Bill"?

I can't find it anywhere, but I recall it had the following lines:

Pecos Bill was quite a cowboy down in Texas, And a western superman to say the least He was the roughest, toughest critter Never known to be a quitter And he never had no fear of man or beast So yipee-i-a, i-a, yipee-i-o...

I don't know the rest...

Any help is appreciated.