Batman #189

Batman #189, published in March 1967, stands as a notable entry in the Silver Age of comics, primarily recognized for the first appearance of Poison Ivy. Created by writer Robert Kanigher and artist Sheldon Moldoff, the issue was released during the height of the Batmania phenomenon sparked by the 1966 television series. The character was designed to add a new female antagonist to Batman's rogues' gallery, drawing thematic inspiration from the historical figure of Mata Hari and the classic short story 'Rappaccini's Daughter'.

The visual aesthetic of the issue reflects the vibrant, pop-art sensibilities prevalent in DC Comics during the mid-1960s. Sheldon Moldoff, a long-time contributor to the Batman titles, provided the artwork, while Carmine Infantino oversaw the editorial direction. While the issue did not garner immediate critical acclaim at the time of its release, it has since become a cornerstone of Batman history for establishing one of the medium's most enduring and complex environmentalist villains.