Frank Lloyd Wright, The Heroic Years 1920 - 1932 - "Steel Cathedral" for William Norman Guthrie, project - FLLW Archive Drawing Number 2602.001: Elevations (p. 156)

Drawing Citation

Drawing 001 - Elevation, partial, original sketch by FLLW
"Steel Cathedral" for William Norman Guthrie, project (is cited in)
Frank Lloyd Wright, The Heroic Years 1920 - 1932 (published in)