In the Nature of Materials: The Buildings of Frank Lloyd Wright 1887-1941 - National Life Insurance Company Office Building, project - FLLW Archive Drawing Number 2404.012: Section (fig. 263)

Drawing Citation

Drawing 012 - Cross section only of a larger drawing
National Life Insurance Company Office Building, project (is cited in)
In the Nature of Materials: The Buildings of Frank Lloyd Wright 1887-1941 (published in)