Hokusai paid close attention to the production of his work. In letters during his involvement with "Toshisen Ehon", a Japanese edition of an anthology of Chinese poetry, Hokusai wrote to the publisher that the blockcutter Egawa Tomekichi, with whom Hokusai had previously worked and whom he respected, had strayed from Hokusai's style in the cutting of certain heads. He also wrote directly to another blockcutter involved in the project, Sugita Kinsuke, stating that he disliked the Utagawa school style in which Kinsuke had cut the figure's eyes and noses and that amendments were needed for the final prints to be true to his style. In his letter, Hokusai included examples of both his style of illustrating eyes and noses and the Utagawa school style.