Stephen W. Bushell Chinese Art, Volumes I & II. London: Board of Education, 1924; Alfred Maskell Ivories. London: Methuen, First edition, 1905; C.A.S. Williams, Outlines of Chinese Symbolism and Art Motifs. Shanghai, Kelly & Walsh, 1941, and Various authors, Mythologie Asiatique Illustrée. Paris, Librairie de France, 1928.