Al Jaffe, a cartoonist who created the fold-in, one of Mad magazine’s most recognizable features, died April 10 in Manhattan. He was 102.

In 1964, Mr. Jaffee created the “Mad Fold-In,” an illustration-with-text feature on the inside of the magazine’s back cover that seemed at first glance to deliver a straightforward message. When the page was folded in thirds, however, both illustration and text were transformed into something entirely different and unexpected, often with a liberal-leaning or authority-defying message.

For instance, the fold-in from the November 2001 issue asked, “ What mind-altering experience is leaving more and more people out of touch with reality?” The unfolded illustration showed a crowd of people popping and snorting various substances. But when folded, the image transformed into the Fox News anchor desk.

For his creative work, Al Jaffee won cartooning’s top honor, the Reuben Award, putting him in the company of Charles M. Schulz, Mort Walker, Gary Larson, Matt Groening and other luminaries of the trade. In 2020, Mad celebrated Mr. Jaffee with a “Special All Jaffee Issue” to mark his retirement. Mr. Jaffee created a fold-in for the occasion: It starts with an image of Alfred E. Neuman, Mad’s mascot, amid assorted stores that have all posted going-out-of-business signs, under the headline “Economy Collapsing! Unemployed Starving!” But when it was folded in, a new message appeared: “No More New Jaffee Fold-Ins.” Mr. Jaffee’s blissful image is seen hovering above the cityscape.