Peterson looks at the Mormons in Idaho history. He sees Mormon expansion into South Eastern Idaho in the 1850s as Brigham Young's plot to evangelize non-Mormons--incuding Native Americans--to Mormonism. As a result, Mormons settled in Idaho--and though many believed they were merely enlarging Utah's borders, they played a significant role in the early settlement of Idaho. Peterson also examines anti-Mormonism in Idaho. After the territory received statehood in 1890, Fred T. Dubois started on a campaign to disfranchise Mormons.