Bat-Girl’s 1961 Debut: Batman #139 This Day in History Comic Book Addicts Bat-Girl’s 1961 Debut: Batman #139 This Day in History Bat-Girl: The Silver Age Origin of Betty Kane Bat-Girl officially swung into the DC Universe on this day, February 23, 1961, bringing a new layer of youthful energy to the Dynamic Duo’s world. Debuting in the pages of Batman #139, … Bat-Girl’s 1961 Debut: Batman #139 This Day in History Comic Books

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