Imperial Hotel, Tokyo
Private collection, Tokyo
Acquired from the above by the present owner
Cary James, Frank Lloyd Wright's Imperial Hotel, New York, 1968, pp. 35, 42-43
David A. Hanks, The Decorative Designs of Frank Lloyd Wright, New York, 1979, p. 133
Bruce Brooks Pfeiffer, Frank Lloyd Wright: The Complete Works, 1917-1942, vol. 2, Cologne, 2010, pp. 33, 35