Carpenter and Prichard noted that "For all the virtuosity of his work in colour, Rackham remained an artist in line, his mastery having its roots in his early work for periodicals, then breaking free to create the swirling intricate pictures of his prime, and finally reaching the economy and impressionism of his last work." They also remarked on his decline: "Rackham made his name in a heyday of fairy literature and other fantasy which the First World War brought to an end." House stated that Rackham "concentrated on the illustration of books and particularly those of a mystical, magic or legendary background. He very soon established himself as one of the foremost Edwardian illustrators and was triumphant in the early 1900s when colour printing first enabled him to use subtle tints and muted tones to represent age and timelessness. Rackham's imaginative eye saw all forms with the eyes of childhood and created a world that was half reassuring and half frightening."