Bill Schelly has been chronicling and contributing to the fringes of pop culture since the mid-1960s, when he became widely known for his popular comics fanzine Sense of Wonder. He began researching the history of comic book fandom in 1991, eventually compiling it in the book The Golden Age of Comic Fandom (1995). In 1998, he became Associate Editor of the magazine Alter Ego, a post he holds to the present day. His other fandom history books include Sense of Wonder: A Life in Comic Fandom (2000) and Founders of Comic Fandom (2010).
Schelly has written several biographies of film and comics artists, including movie clown Harry Langdon and comic book scribe Otto Binder. Schelly authored Man of Rock, a biography of Joe Kubert (2008). The Art of Joe Kubert (2011) and Weird Horrors and Daring Adventures (2012) followed, all three published by Fantagraphics, along with his biography Harvey Kurtzman, The Man Who Created Mad and Revolutionized Humor in America, which won an Eisner Award for Best Comics-Related Book in 2016.