Purple Stories: The Speech that saved the #Vikings
Pro Football Journal: 1964 Lions at Vikings—Purple over Purple Uniforms
The Detroit Lions Aren't Low Energy Anymore
NFL fair-catch kick attempts – Quirky Research
Purple People Eaters - Wikipedia
Flashback Friday: Vikings 30, Lions 20 (1977)
The Wilderness Years - New York Giants 1964-1978 - Big Blue Interactive
Pro Football Journal: 1964 Lions at Vikings—Purple over Purple Uniforms
Minnesota Vikings: Power to the Purple – Rolling Stone
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Comeback king Vikings set NFL rally record in win vs. Colts