Established in 1921, Dell was only the second major Paperback published in America (the other being Pocket Books). Dell started publishing paperbacks in 1942. Dell covers seem to have no standard pattern to their design, instead focusing on bright, eye catching covers. Dell Publishing have now been bought out, and are now part of the Bantam Dell Publishing group by Random House.
Pocket books produced the first mass produced paperback books in America in 1939. The Murder of Roger Ackroyd was in the first 10 Pocket Books to be published. These first books were priced at 25c and featured a kangaroo named Gertrude (after the artist’s mother in law).