In April 2008, the University of North Texas Press published Robert Earl Hardy's biography on the Songwriter, titled A Deeper Blue: The Life and Music of Townes Van Zandt, which took more than eight years of research, including interviews with Mickey Newbury, Jack Clement, Guy and Susanna Clark, Mickey White, Rex Bell, Dan Rowland, Richard Dobson, John Lomax III, Van Zandt's brother and sister, cousins, his three ex-wives, and many others. The book has been described by Kirkus Reviews as a "poignant, clear and vivid portrait."