He has done several series since The Ashes. I think he died in ‘04. He was certainly a prolific writer. I have never read any of his western series.
I started out by reading the Smoke Jensen books. In one he said that if one lawyer lived in a town, he starved but if another one moved in, both got rich. He sure was a conservative writer who had his own ideas about justice. If anyone has not read the Ashes books, you owe it to yourself to read them starting with Out of the Ashes. It sets the stage for all of the others.