“Grandpa went back to Africa with Garvey,” my grandmother recalled. I carried this precious refrain into the archives with me. In Garvey’s place, I found Chief Sam, in the black and Indian borderlands of Oklahoma. While the Great Migration had largely displaced the preceding history of black rural emigration at the nadir, so had Garveyism displaced descendants’ memories of the Chief Sam movement. Meanwhile, scholars portrayed the movement as the product of a single charismatic charlatan and his nameless, faceless followers. Relying almost exclusively on U.S. sources and the memories of those “left behind” in an economically depressed and politically repressed Jim Crow Oklahoma, the only book-length study of the movement, written in the 1950s, argued that the Chief Sam movement illustrated “the desperate hopes of an utterly desperate group of people.” The image fit easily with twentieth-century American tropes of black victimhood and criminality....