First up for the new HGE is the first issue of CREEPY, published by Warren Publications in 1964. When I saw this on the stands originally I thought something new had happened, and it had. CREEPY and its later companion EERIE revolutionized comic books in the 1960s and '70s with good old fashioned black and white! Freed of the constraints of the Comics Code they were able to explore more adult themes, even as a great many comic book readers were becoming young adults.
From front to back CREEPY #1 was a showcase for some of the most gifted artists of the era: Williamson, Frazetta, Crandall, Morrow, Torres... Although it's been reprinted in various forms, this is scanned from my personal copy of CREEPY #1, bought with trembling fingers (and 35¢) on that long ago day in 1964.