Early on in his career as a doctor, Henry Gray (c.1827-1861) showed a particular interest in anatomy. He became a member of the Royal College of Surgeons aged just 20. After the award of fellowships by the Royal Society and the RCS, he was appointed house surgeon at St George's Hospital, London, and then lecturer in anatomy at its medical school. Gray died tragically young at the age of 34, after contracting a severe form of smallpox. Henry Carter (1831-1897) was an anatomical artist and surgeon who created the illustrations for Gray's textbook. Peter Gray is long established as an illustrator of books, magazines and newspapers with occasional forays into film storyboards and costume design, advertising and animation projects. Peter is also the author of many books for adults and children, which have been published in many languages all around the world.

Since graduating from Loughborough College of Art and Design with a specialist degree in illustration, Peter Gray has contributed illustrations to many books, of wide-ranging subject matter. Peter has also worked on storyboards and costume design for the film industry and regularly contributes illustrations to national newspapers ( Financial Times, Sunday Times ) and magazines ( The Spectator, Readers' Digest ). He lives in Suffolk, UK.