The closest I could find on a google search is a reissue on Vanguard of their greatest hits, where it is listed as:

WHEN I WAS A COWBOY
(Trad. arr. & adpt. by Fricker/Tyson)
Ian & Rick Turner, guitars; Felix Pappalardi, bass; Paul Griffin, organ

There's lots of other, by Ian, avaialable HERE.

Sorry, I'd love to hear this, so I hope someone else can help.

kat