His new book is Between Midnight and Day: The Last Unpublished Blues Archive. It is a large-format book with photos and text by Waterman. In the early 1960s, Waterman became interested in traditional blues music. He rediscovered blues legend Son House living in Rochester, N.Y. Waterman then formed Avalon Productions, the first agency dedicated to promoting blue artists. Waterman managed many acts, including Bonnie Raitt. He's been representing and photographing blues artists for more than 40 years. He is the only non-performer to be inducted into the Blues Hall of Fame.