Casper & Nightmare #15

This Giant-Size Harvey Comics treat pairs Casper the Friendly Ghost and Nightmare the Galloping Ghost on a wonderfully chaotic cover by Warren Kremer, where the two ghostly pals find themselves face-to-face with a runaway steam locomotive bearing down on the tracks right beneath them. The left side of the cover teases the full roster of Harvey favorites — Spooky, Wendy, and the Ghostly Trio — making this 1966 package feel like a genuine celebration of the publisher's beloved lineup. At just 25 cents, it's a charming snapshot of Harvey Comics at its most playful and fun.