Another song about shagging a girl of a different race is "The Yellow Rose of Texas," done beautifully by Michael Martin Murphey on "Cowboy Songs." That album also has a great Ian Tyson song called "Cowboy Pride."
Did anyone mention Jerry Jeff Walker's "Navajo Rug" album?
And there's a wonderful song by Woody Guthrie called "Belle Starr," never recorded by Woody. In fact, he never wrote music to it, but Pete Seeger did, and put it on an album of cowboy songs by various artists.
And you can't forget Frankie Laine. I know how corny he is, but I still love him.
Funniest cowboy album...Riders In The Sky, "The Cowboy Way."