Dennis McNally is the author of the forthcoming music history On Highway 61: Music, Race, and the Evolution of Cultural Freedom (on sale October 14) on the development of African American music throughout the 20th century and its influence on abolition, civil rights, and interracial culture in the United States. He is the former publicist and authorized biographer of The Grateful Dead, as well as the author of the Jack Kerouac biography Desolate Angel: Jack Kerouac, the Beat Generation, and America