In 1969, their dominant defense led to the Vikings' league championship in 1969, the last NFL championship prior to the merger of the NFL with the AFL. However, a new professional team in the area did not surface again until August 1959, when Minneapolis businessmen Bill Boyer, H. Skoglund, and Max Winter were awarded a franchise in the new American Football League (AFL).
Five months later, in January 1960, after significant pressure from the NFL, the ownership group, along with Bernard H.
The Vikings conducted summer training camp at Bemidji State University from 1961 to 1965.
In 1966, the team moved to their training camp to Minnesota State University in Mankato.
The Vikings played in four Super Bowl games in the 1970s, but lost all four.
During the 1960s, the Vikings' record was typical for an expansion franchise, but improved over the course of the decade, resulting in a Central Division title in 1968. Bank Stadium in the Downtown East section of Minneapolis.
Ridder Jr., reneged on its agreement with the AFL and then was awarded the National Football League's 14th franchise, with play to begin in 1961.
From the team's first season in 1961 to 1981, the team called Metropolitan Stadium in suburban Bloomington home.
On March 10, 1967 the Vikings hired new head coach Bud Grant to replace Van Brocklin, who had resigned on February 11, 1967.
Grant came to the Vikings from the Canadian Football League as head coach for the Winnipeg Blue Bombers, whom he led to four Grey Cup Championships in 10 years.
Replacing Tarkenton at quarterback was eight-year CFL veteran and Grey Cup champion Joe Kapp.
During the late 1960s, the Vikings built a powerful defense known as the Purple People Eaters, led by Alan Page, Carl Eller, Gary Larsen, and Jim Marshall.
The Vikings defeated the Cleveland Browns 27–7 in the last pre-merger NFL Championship Game on January 4, 1970, at Metropolitan Stadium.