Immortalized as Dean Moriarty by Jack Kerouac in his epic novel, On the Road, Neal Cassady was infamous for his unstoppable energy and his overwhelming charm, his savvy hustle and his devil-may-care attitude. A treasured friend and traveling companion of Kerouac, Allen Ginsberg, William Burroughs, and Ken Kesey, to name just some of his cohorts on the beatnik path, Cassady lived life to the fullest, ready for inspiration at any turn.

Before he died in Mexico in 1968, just four days shy of his forty-second birthday, Cassady had written the jacket blurb for this book: Seldom has...