Harmon Killebrew was born on June 29, 1936.
Killebrew spent the first 20 seasons of his 22-year career in the majors with the Minnesota Twins franchise (which had been the Washington Senators up until 1960) from 1954-1974.
Killebrew had incredible power-hitting ability. At the time of his retirement, he was second behind only Babe Ruth for the most home runs in American League history. Alex Rodriguez eventually surpassed him.
It wasn't until 1959 that Killebrew established himself as one of the league's premier hitters. From 1959-1971, he averaged 39 home runs a season, and made the All-Star Game 11 out of 13 years. Killebrew won the AL MVP in 1969.
Killebrew was inducted to the Hall of Fame in 1984. He ended his career with 573 home runs, good for 11th all-time.