The Fold-In became one of "Mad"'s signature features, and appeared in almost every issue of the magazine from 1964–2020. A single issue in 1977 was published without a Fold-In (though Jaffee supplied the issue's back cover), and a 1980 issue instead featured a unique double-visual gimmick by Jaffee in which the inside back cover and the outside back cover merged to create a third image when held up to the light. The third-ever Fold-In in 1964 featured a unique diagonal folding design, rather than the standard left-right vertical format. The image revealed the four members of The Beatles becoming bald (and thus losing their popularity).