Shannon, Jr., Joe. Chief criminal division, Tarrant County District Attorney, 1972-78.
Complete Marquis Who's Who Biographies .
Memorial, September 1975, p. 753. Relatives: Joe Shannon, Sr. - father, Joe Shannon, Jr. - son. (Notes Joe Shannon, Jr. was assistant district attorney, Fort Worth.)
Texas Bar Journal .
Tarrant County Criminal District Attorney, 2013 edition.
Texas Legal Directory .