Ib Penick (1930–1998), a native of Denmark, was known as "the creative mind behind the resurgence of pop-up children's books in the 1960s and 1970s.
[3] Penick related to one reporter, "...there are only about 100 folds and tricks to [his paper engineering] trade.
"[4] In the 1960s Penick joined Waldo Hunt at Graphics International, a firm that created pop-up books, including a series of titles for Random House and other publishers.
[5] Penick was the "premier paper engineer" for the Random House pop-up titles, with Tor Lokvig as his protege.
[6] According to Gerald Harrison, a former president of the children's books division at Random House, Penick "was really responsible for creating the whole world we lived in.