After working as a freelance illustrator and designer in New York, Bob Gill (b.1931) moved to London in 1960, where he joined Alan Fletcher and Colin Forbes to create a design agency that became the precursor of Pentagram. He resumed his freelance career as an illustrator, designer, teacher, film-maker and author of children's books in 1967, and returned to New York in 1975. His clients include Pirelli, Universal Pictures, Nestle and the United Nations, and he has written a number of books on graphic design.