Frank Lloyd Wright: From Within Outward - "Steel Cathedral" for William Norman Guthrie, project - FLLW Archive Drawing Number 2602.??1: Drawing (p. 39, fig. 13)

Drawing Citation

Drawing ??1 - Guthrie original sketch for cathedral
"Steel Cathedral" for William Norman Guthrie, project (is cited in)
Frank Lloyd Wright: From Within Outward (published in)