Frank Lloyd Wright: designs for an American landscape - Theater for Aline Barnsdall, project - FLLW Archive Drawing Number 2005.001: Perspective (p. 37, fig. 30)

Drawing Citation

Drawing 001 - Perspective shown full size, sketchy but by Wright
Theater for Aline Barnsdall, project (is cited in)
Frank Lloyd Wright: designs for an American landscape (published in)