From Zappa Wiki Jawaka
Robert (Bob) Weston Smith, aka Wolfman Jack (January 21, 1938, Brooklyn, New York, U.S. - July 1, 1995, Belvedere, North Carolina, U.S.) was an American radio presenter and DJ who broadcasted as 'Wolfman Jack' or 'The Wolfman'. He presented records and products in a continuous 'howling moondog' style, similar to bluesman Howlin' Wolf, on Mexican border radio XERF.
In 1973 his popularity reached a cult status when he played himself in a pivotal role in the film American Graffiti, the soundtrack of which contains 'golden oldie' hits by bands - such as The Spaniels, The Clovers, The Del-Vikings & The Five Satins - all featured by FZ in his radio presentations as a Fraudulent DJ.
Wolfman Jack is name-checked in the liner notes, The Legend Of Cleetus Awreetus-Awrightus & the Grand Wazoo, of the FZ album The Grand Wazoo, 1972.