One way in which the TV show is different from the movie is that when the one-eyed, wooden-legged local madame propositions Bart, he turns her down not because of the eye or leg but because the local bigots are already tossing him down the local well for owning a white horse and he doesn't want to find out what they'd do if he slept with a white woman. The sheriff in the movie doesn't give in to the local bigots.

I wonder when the first interacial couple on US TV was?

Oh, and in accordance with something a friend mentioned about The Rockford Files, this is another 1970s where being a hooker isn't a bad thing. It's just a job and the people involved are no better or worse than anyone else.