* Uncredited Work: Finger was famously uncredited for much of his work on Batman, particularly in the early years. He was the primary writer and co-creator of many iconic elements of the Batman mythology, but his contributions were often overlooked and attributed to Bob Kane.
* No Complete Records: Records of comic book production in the early days were not always thorough, making it difficult to determine the precise number of stories he penned.
* Collaboration: Finger often collaborated with other writers, making it challenging to isolate his specific contributions to individual issues.
However, we can say that he wrote hundreds of Batman comics, likely more than any other writer in the character's history.