Since 1983 Ingersoll has written "The Law Is a Ass" (sic; the title comes from Mr. Bumble's dialogue in Charles Dickens' Oliver Twist and preserves the character's grammatical error), a regular column in Comics Buyer's Guide, which was also published online by World Famous Comics.com from 1999 to 2003.[3][4] The column examines the depiction of the law in comics and other fiction and compares it humorously to the reality of legal practice. On February 14, 2014 Ingersoll revived "The Law Is a Ass" on the ComicMix web site.
He is also the writer of several prose works. He wrote the horror story Making the Leap which was published in Hot Blood XI: Fatal Attractions (2003, ISBN0-7582-0099-4). He is the co-author (with his fellow Comic Buyer's Guide columnist Tony Isabella) of the short storyIf Wishes Were Horses... (which was published in The Ultimate Super Villains, ISBN1-57297-113-4, in 1996) and the novelsCaptain America: Liberty's Torch (1998 ISBN0-425-16619-8) and Star Trek: The Case Of The Colonist's Corpse (A Sam Cogley Mystery) (2003, ISBN0-7434-6497-4).[5] He is co-author (with fellow comic-book creator Thomas F. Zahler) of the short story "'Til Death", which was published in Star Trek: The Next Generation: The Sky's the Limit in 2007.