The Only Good Indians, Stephen Graham Jones’s new horror novel, is rooted in a dark history. The title harkens to a phrase that is often credited to the Union General Philip Sheridan, but was later repeated by Theodore Roosevelt. “I don’t go so far as to think that the only good Indians are the dead Indians, but I believe nine out of ten are, and I shouldn’t like to inquire too closely into the case of the tenth,” Roosevelt said in New York City in 1886 while giving a lecture titled “Ranch Life in the West.” The phrase appears in the novel, too, when Denorah, a high school basketball player and the daughter of one of...