September 20, 1961: Roger Maris hits 59th home run as Yankees clinch pennant – Society for American Baseball Research
Maris and Ruth: Was the Season Games Differential the Primary Issue? – Society for American Baseball Research
Roger Maris - Wikipedia
Aaron Judge hits home run #62 and makes baseball history : NPR
Roger Maris Collection
Roger Maris' Record-Breaking Season: 61 Home Runs - TIME
My 1961' views Roger Maris-Mickey Mantle home run chase through eyes of adolescent - The San Diego Union-Tribune
Roger Maris 1961 Game Used Baseball Glove From 61 Home Run Record Seas — Showpieces Sports
Aaron Judge hailed as the 'clean home run king' after setting new record
Roger Maris Hits His 59th Home Run September 20, 1961