Frank Lloyd Wright Drawings: Masterworks fron the Frank Lloyd Wright Archives - "Steel Cathedral" for William Norman Guthrie, project - FLLW Archive Drawing Number 2602.001: Elevations (p. 92)

Drawing Citation

Drawing 001 - Elevation, partial, original sketch by FLLW
"Steel Cathedral" for William Norman Guthrie, project (is cited in)
Frank Lloyd Wright Drawings: Masterworks fron the Frank Lloyd Wright Archives (published in)