Cohn began working in the comic industry at age 14 by helping to run convention booths for Image Comics and Todd McFarlane Productions throughout his teenage years. Beyond illustrating his academic books, Cohn’s creative work appears in several graphic novels, like "We the People: A Call to Take Back America" (2004) with Thom Hartmann, and illustrations for academic works, including Ray Jackendoff’s "A User’s Guide to Thought and Meaning" (2012), and the comic strip “Chinese Room” with philosopher Daniel Dennett.