In Roosevelt's Blues, Guido van Rijn documents more than a hundred blues and gospel lyrics that contain direct political comment about FDR. Altogether, they convey the thought, spirit, and history of the African-American population during the Roosevelt era. Included in the book are recorded sermons by Rev. J. M. Gates and lyrics to songs recorded by such notable musicians as Huddie "Leadbelly" Ledbetter, Big Bill Broonzy, "Champion" Jack Dupree, Sonny Boy Williamson, Josh White, the Mississippi Sheiks, and many others. Using these sources, which have been neglected by historians, van Rijn documents Roosevelt's vast popularity among blacks.