He began his career in the city as an illustrator and designer in advertising, moving to Los Angeles in 1958.
As well as working for advertising agencies, he was art director for Teen magazine and Bullock's department store.
[1] In 1965 he began working on the design of pop-up books for Elgin Davis at Graphics International.
[2] He went on to participate in the creation of more than 50 books, as a freelance author, illustrator and designer of pop-up mechanisms.
[4] "You have to think like a child, that's your marketplace, to think like a child would think," said freelance paper engineer John Strejan, 54, known by his peers as "the Blade," "Silverblade" or "the Maestro" for his masterful skill with an X-Acto knife, the tool of the paper engineer's trade.Compared to earlier pop-ups, Strejan's work was noted for a dynamic use of motion, using the unfolding of the mechanism to animate the design.