From 1953 through 1955, McMahon was a member of the staff of Family Entertainment's comic book department, writing and editing stories for the majority of the books in their line.* According to his (incomplete and disorganized) records, after leaving the publisher, McMahon continued to sell comic book scripts off and on to Family up until the company's demise in 1986, including a number of stories for their black and white magazines. Most notable amongst his comics work is the graphic novel The Language of Angels (1985), illustrated by W. Danforth Werd.

As it was the policy of Family Entertainment to not credit comic work, it is difficult to tell what McMahon actually wrote for them, but a few tattered comic scripts were discovered among his files. If and where these stories were actually published is not known, but we decided to present a few for your enjoyment.