Not all of Lafferty's work was science fiction or fantasy; his novel "Okla Hannali" (1972), published by University of Oklahoma Press, tells the story of the Choctaw in Mississippi, and after the Trail of Tears, in Oklahoma, through an account of the larger-than-life character Hannali and his large family. This novel was thought of highly by the novelist Dee Brown, author of "Bury My Heart at Wounded Knee" (1970), who on the back cover of the edition of published by the University of Oklahoma Press, writes "The history of the Choctaw Indians has been told before and is still being told, but it has never been told in the way Lafferty tells it ... Hannali is a buffalo bull of a man who should become one of the enduring characters in the literature of the American Indian." He also wrote, "It is art applied to history so that the legend of the Choctaws, their great and small men, their splendid humor, and their tragedies are filled with life and breath."