Artist Bob Kane negotiated a contract with National Comics (the future DC Comics) that signed away ownership of the character in exchange for, among other compensations, a sole mandatory byline on all Batman comics (and adaptations thereof). Finger's name, in contrast, did not appear as an official credit on Batman stories or films until 2015. Finger began receiving limited acknowledgment for his writing work in the 1960s; the letters page of Batman #169 (Feb. 1965), for example, features editor Julius Schwartz naming Finger as creator of the Riddler.
