Cartoons from Gamma Newsletters

These cartoons appeared in many GAMMA Newsletters beginning with the June 1984 issue.  The first cartoons appeared under the title "Dupont Circus".  The cartoonist's name is never mentioned in the newsletters but these cartoons are signed by "DC".  Later the name of the cartoons is changed to "GAMMATOONS".  While some appear to be original art work, many appear to be clip art with clever captions.  At one point, the caption was published after newsletter contest challenge.