[2] Eyles' colour plates and black and white illustrations began appearing in boys' annuals in the 1920s and 1930s.
[3] He painted covers and drew interior illustrations for story papers like Wild West Weekly.
[1] He also illustrated novels, including an edition of Jack London's White Fang,[2] and children's books,[4] including an edition of Charles and Mary Lamb's Tales from Shakespeare, and in the 1930s and 1940s, painted a series of covers for Collins' western novels.
[5] After the Second World War he was hired by Amalgamated Press editor Leonard Matthews to draw adventure strips for the publisher's comics,[3] beginning with "The Phantom Sheriff" in The Knockout in 1947,[1] a character whose prose adventures he had previously illustrated in Wild West Weekly.
[7] He excelled at drawing horses,[8] which made him particularly suitable for western characters, including Wild Bill Hickok,[6] Kit Carson[1] and Buffalo Bill,[2] as well other historical characters like Hereward the Wake, Robin Hood[3] and Dick Turpin,[2] and new artists were given samples of his work as examples of how to "do horses properly".