Jackson's career dated back to the 1960s, when he co-founded Bradbury Press. He would soon help transform children's publishing by releasing Blume's candid classic "Are You There God? It's Me, Margaret," a book both acclaimed and censored over the following decades. He also published such prize winners as Fox's "The Slave Dancer" and Susan Patron's "The Higher Power of Lucky."
Jackson himself became a children's author. His books included "In Plain Sight" and "Puddle."