Short answers, pulled from the story.
The National Football League granted Seattle an expansion franchise in June 1974. Lloyd W. Nordstrom signed the agreement on behalf of a consortium that included his family's department store business.
Jack Patera served as the inaugural head coach after being hired from the Minnesota Vikings in January 1976. He led the team during its early years before Chuck Knox found stability for the franchise.
The team took its first steps onto the field inside the new Kingdome stadium during a preseason game against the San Francisco 49ers in August 1976. This event marked the beginning of the franchise playing on the field.
The Seattle Seahawks began playing games on the field in August 1976. The team played its first preseason match against the San Francisco 49ers at the Kingdome stadium.