Pittsburgh Steelers quarterbacks Terry Bradshaw (12), Joe Gilliam (17), and Terry Hanratty (5) are shown in 1975. (AP Photo Stock Photo - Alamy
Pittsburgh Steelers' quarterback Joe Gilliam Jr., (17) looks to pass the ball during practice in Pittsburgh in 1974. Terry Bradshaw is at right. (AP Photo Stock Photo - Alamy
Pittsburgh Steelers quarterbacks Terry Bradshaw (12), Joe Gilliam (17), and Terry Hanratty (5) are shown in 1975. (AP Photo Stock Photo - Alamy
Pittsburgh Steelers' quarterback Joe Gilliam Jr., (17) looks to pass the ball during practice in Pittsburgh in 1974. Terry Bradshaw is at right. (AP Photo Stock Photo - Alamy
Joe Gilliam (17) quarterback of Pittsburgh Steelers in August 1975. (AP Photo/Harry Cabluck Stock Photo - Alamy
Immaculate Reception:' In interview hours before his death, Franco Harris said catch 'blows my mind'
Joe Gilliam (17) quarterback of Pittsburgh Steelers in August 1975. (AP Photo/Harry Cabluck Stock Photo - Alamy
Pittsburgh Steelers' quarterback Joe Gilliam Jr., (17) looks to pass the ball during practice in Pittsburgh in 1974. Terry Bradshaw is at right. (AP Photo Stock Photo - Alamy
Immaculate Reception:' In interview hours before his death, Franco Harris said catch 'blows my mind'
Joe Gilliam (17) quarterback of Pittsburgh Steelers in August 1975. (AP Photo/Harry Cabluck Stock Photo - Alamy
Joe Gilliam (17) quarterback of Pittsburgh Steelers in August 1975. (AP Photo/Harry Cabluck Stock Photo - Alamy
Pittsburgh Steelers' quarterback Joe Gilliam Jr., (17) looks to pass the ball during practice in Pittsburgh in 1974. Terry Bradshaw is at right. (AP Photo Stock Photo - Alamy