Frank Lloyd Wright; Volume 04: Monograph 1914-1923 - Imperial Hotel, scheme 2 - FLLW Archive Drawing Number 1509.643: Floor Plan (p. 28, fig. 43)

Drawing Citation

Drawing 643 - Floor plan Banquet Hall and roof plan oof lower levels
Imperial Hotel, scheme 2 (is cited in)
Frank Lloyd Wright; Volume 04: Monograph 1914-1923 (published in)