September 18, 1975: Harmon Killebrew hits his 573rd career home

Twins' all-time retired numbers

WHEN TOPPS HAD (BASE)BALLS!: September 2017

The Twins Almanac for April 22–29 - Twins - Twins Daily

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1955 Topps Doubleheaders Harmon Killebrew - 111 (Johnny Podres - 112)

July 4, 1961: Harmon Killebrew hits first inside-the-park home run in Twins history – Society for American Baseball Research

Harmon Killebrew Stats & Facts - This Day In Baseball

Twins slugger Killebrew dies

August 23, 1954: Harmon Killebrew goes 3-for-4 in first start for Senators – Society for American Baseball Research

Harmon Killebrew dead at 74, Sports

Minnesota Twins All-Time Team - Last Word On Baseball

Harmon Killebrew – Society for American Baseball Research

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