In his book "Without Reservation: The Making of America's Most Powerful Indian Tribe and Foxwoods the World's Largest Casino" (2001), Jeff Benedict argues that the Mashantuckets are not descended from the historical Pequot tribe, but rather from the Narragansett tribe. Spokesmen for the Pequots denounced the book and asserted that Benedict's genealogical research was inherently flawed, as it failed to reflect the correct descendant lineages for the Mashantucket Pequot people identified on the 1900 and 1910 US Censuses. Laurence Hauptman argued with Benedict's assertions on the genealogy of current members, and anthropologist Katherine A. Spilde also criticized it.