The New Yorker has published an online excerpt of David Grann’s new book about the murders of more than a dozen Osage Indians in the 1920s, Killers of the Flower Moon: The Osage Murders and the Birth of the FBI.

Like their parents, Mollie and her sisters had their names inscribed on the Osage Roll, which meant that they were among the registered members of the tribe. It also meant that they possessed a fortune. In the early eighteen-seventies, the Osage had been driven from their lands in Kansas onto a rocky, presumably worthless reservation in northeastern Oklahoma, only to discover, decades later, that this land was sitting above some of the largest oil deposits in the United States. To obtain that oil, prospectors had to pay the Osage in the form of leases and royalties. In the early twentieth century, each person on the tribal roll began receiving a quarterly check. The amount was initially for only a few dollars, but over time, as more oil was tapped, the dividends grew into the hundreds, then the thousands of dollars. And virtually every year the payments increased, like the prairie creeks that joined to form the wide, muddy Cimarron, until the tribe members had collectively accumulated millions and millions of dollars. (In 1923 alone, the tribe took in more than thirty million dollars, the equivalent today of more than four hundred million dollars.) The Osage were considered the wealthiest people per capita in the world. “Lo and behold!” the New York weekly Outlook exclaimed. “The Indian, instead of starving to death … enjoys a steady income that turns bankers green with envy.”

Fair warning, this piece is tantalizingly short and serves more as a teaser for the book than a stand-alone excerpt, which I don’t mind because I was planning on reading it anyway.