September 21, 1969: Killebrew's perfect day not enough for Twins
1969 Ernie Banks 497 Homer Mets Cubs Smoke Bomb Harmon Killebrew Newspaper Oct 3
Classic Minnesota Twins!: May 2010
Used Book in Good Condition
The Good, the Bad, & the Ugly: Minnesota Twins: Heart-Pounding, Jaw-Dropping, and Gut-Wrenching Moments from Minnesota Twins History
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Minnesota Twins Take 2 Of 3 From Colorado Rockies
The Loop Special Report: The Twins-Yankees rivalry
Thom Henninger
September 20, 1969: Jim Perry's 20th victory pushes Twins nearer pennant – Society for American Baseball Research
September 21, 1970: A's rookie Vida Blue no-hits Twins, drinks their champagne – Society for American Baseball Research
Ranking the Twins' top 10 seasons ever by a 3B: Harmon Killebrew rules again - The Athletic
