Letterhead used in 1955 by Harvey Kurtzman, the founding editor of Mad. This was the year of its revamp, as Mad evolved from groundbreaking comic book to incredibly successful magazine.
Mad Magazine, 1955/6 | Source

Letterhead used in 1955 by Harvey Kurtzman, the founding editor of Mad. This was the year of its revamp, as Mad evolved from groundbreaking comic book to incredibly successful magazine.

Mad Magazine, 1955/6 | Source