September 21, 1969: Killebrew's perfect day not enough for Twins

Harmon Killebrew's 500th Homerun

Minnesota Twins great Harmon Killebrew has esophageal cancer - ESPN

Rod Carew

Matt Trueblood - Baseball

Minnesota Twins Take 2 Of 3 From Colorado Rockies

The Best Baseball Card from 1972 Was a Real Killer – Wax Pack Gods

The Twins Almanac for April 15–21 - Twins - Twins Daily

The Loop Special Report: The Twins-Yankees rivalry

1969 Ernie Banks 497 Homer Mets Cubs Smoke Bomb Harmon Killebrew Newspaper Oct 3

Ranking the Twins' top 10 seasons ever by a 3B: Harmon Killebrew rules again - The Athletic

September 21, 1969: Killebrew's perfect day not enough for Twins to beat Pilots, clinch division – Society for American Baseball Research

You want strength? You want dignity? You couldn't do better than Henry (or Harmon, for that matter)! – Bulletin Board

Harmon Killebrew, Wiki