William "Bill" Finger was an American comic strip and comic book writer best known as the uncredited co-creator, with Bob Kane, of the DC Comics character Batman, as well as the co-architect of the series' development. In later years, Kane acknowledged Finger as "a contributing force" in the character's creation. Comics historian Ron Goulart, in Comic Book Encyclopedia, refers to Batman as the "creation of artist Bob Kane and writer Bill Finger", and a DC Comics press release in 2007 about colleague Jerry Robinson states that in 1939, "Kane, along with writer Bill Finger, had just created Batman for [DC predecessor] National Comics". Film and television credits include scripting The Green Slime (1969), Track of the Moon Beast (1976), and three episodes of 77 Sunset Strip. -Wikipedia

He was a comic book and pulp magazine editor, and a science fiction agent and prominent fan. In 1932, Schwartz co-published (with Mort Weisinger and Forrest J. Ackerman) Time Traveller, one of the first science fiction fanzines. Schwartz and Weisinger also founded the Solar Sales Service literary agency (1934–1944) where Schwartz represented such writers as Alfred Bester, Stanley G. Weinbaum, Robert Bloch, Ray Bradbury, and H. P. Lovecraft, including some of Bradbury's first published work and Lovecraft's last. In addition, Schwartz helped organize the first World Science Fiction Convention in 1939. In 1944 he became an editor at All-American Comics, one of the companies that evolved into DC Comics.