Pep Comics #78

Pep Comics #78 from 1950 delivers one of Archie's most charmingly clever cover gags, with Bob Montana's art perfectly capturing the joke: an elderly teacher tells Betty "In geometry, always think of the triangle!" — while Betty's daydream bubble reveals exactly the triangle she's thinking of, with Archie's face connected by lines to both Betty's and Veronica's. It's a witty visual pun that captures the eternal Riverdale love triangle with a single, well-timed classroom scene. At 52 pages for a dime, this is a wonderful snapshot of Archie comics humor at its most endearing.