Sean Wilentz, author of Bob Dylan in America, discusses Bob's radio show in Dylan Speaks! - an excerpt from the book. One quote:
One of the most interesting features of the show was Dylan the DJ, or his persona as a DJ. He never denied who it was behind the microphone, dropping, here and there, little jokes or anecdotes about his life as a musician among musicians. With his choice of themes, listeners learned, among other things, that the Bob Dylan who decades earlier wrote a song about the New York Yankees pitcher Catfish Hunter remains very much a baseball fan, enough so to offer his own a cappella singing of “Take Me Out to the Ballgame” on his show entitled “Baseball.” But Dylan also took on a role, as a disc jockey from out of the past but also as instructor of music appreciation, biographer, comedian, commentator, and dispenser of recipes, household hints, and other bits of useful information.