Lassito's Last War

Don't go by the terrible cover on this book. I think it is one my best best efforts...at least back then. Like all authors, I tend to think my current writting is superior. But this story was a favorite.
A man, Lassito, is tracking ex-Quantrill men down and forcing them into fights...his personal justice for what they did to the town of Lawrence, Kansas. But he arrives in San Marco and discovers a Chinese slave ring, where most of the entire town is involved. To buck the half-dozen barons and take on their army of gunmen is an impossible task. However, after saving a Chinese girl from a beating and possible death, Lassito rolls up his sleeves and takes on all comers! Naturally, there's a hopeless romance too...hopeless, because the only way he can escape his fame is to die!