American GelbviehGelbvieh News Archives - American Gelbvieh
Message in a bottle - Wikipedia
Madden NFL 2004 Franchise mode - Cleveland Browns vs Baltimore
CCHS grad Clint Oldenburg remembers Madden for his authenticity
Madden NFL 2004 - San Francisco 49ers vs Tampa Bay Buccaneers
Promo List Smithsonian Institution
For Clint Oldenburg, Life after Football is a Video Game - Alumline
E3 2018: Lead Gameplay Designer Clint Oldenburg Talks Madden NFL
Promo List Smithsonian Institution