The first Penguin paperbacks appeared in the summer of 1935, revolutionizing the publishing industry and becoming an integral part of British culture and design history. The development of Penguin covers runs parallel to the emergence of graphic design as a profession, and, under a long line of talented and creative designers, the design of Penguin books has evolved and progressed. It is currently led by Art Directors Jim Stoddart and John Hamilton.

Penguin by Design by Phil Baines and Seven Hundred Penguins provide further information on the history of Penguin design and on the most striking and well-loved covers.