Hot Stuff Sizzlers #36

In "The Mystery of the Missing Mountain [Part 1]," young inventor Jimmy stumbles upon a mysterious formula—XXQ9456Y—using nothing but a chemistry set, leading to a startling journey to an unknown planet. Though warned he can never return home after being discovered, Jimmy somehow makes it back, bringing with him a small, undeniable piece of proof from his adventure. A 25-cent comic from 1969, this issue features a typeset letterer and is a standout in the Hot Stuff Sizzlers series.