Jack Patera, first coach of Seahawks, dies at age 85
Seattle Seahawks, American Football Wiki
Shaun Alexander, NFL running back, Seattle Seahawks, 2005 MVP
Notable sports deaths of 2018 - The Boston Globe
Jack Patera, the first Seattle Seahawks head coach, dies at 85
Seahawks Wednesday practice report: 6 players did not participate
Jack Patera (1933-2018) - Find a Grave Memorial
Shaun Alexander, NFL running back, Seattle Seahawks, 2005 MVP
Original Seahawks head coach Jack Patera passes away
Former Seattle Seahawks head coach Jack Patera passes away - Field Gulls