Wright Studies, Volume One: Taliesin, 1911-1914 - House, Studio, and Farm ("Taliesin 1") for Frank Lloyd Wright - FLLW Archive Drawing Number 1104.002: Steam Heating Plans (p. 106, fig. 7)

Drawing Citation

Drawing 002 - Steam Heating Plans - Ground floor plan house through tower/Steam Heating Plan
House, Studio, and Farm ("Taliesin 1") for Frank Lloyd Wright (is cited in)
Wright Studies, Volume One: Taliesin, 1911-1914 (published in)