Hilleman's new novel is World, Chase Me Down.
At Publishers Weekly he tagged ten great western novels you've probably never read, including:
Deadwood by Pete DexterRead about another entry on the list.
Forget the HBO show of the same name. No, really, forget it. I’ve tried to despite loving it, mainly because of the unfinished ending after it was cancelled following season three. This novel takes place in the same famous South Dakota town and features many of the same historical players including Wild Bill, Charlie Utter, and my personal favorite Calamity Jane. But that’s where the similarities stop. Dexter’s novel was published in 1986, so it’s got dibs anyway. Plus, it’s just a lot damn better and has an actual ending to boot! It’s also as bizarre as a Western novel gets. And that’s a good thing.