Wrightscapes: Frank Lloyd Wright's Landscape Designs - House, "Wingspread" for Herbert F. Johnson - FLLW Archive Drawing Number 3703.033: Floor Plan (p. 240, fig. 7-16)

Drawing Citation

Drawing 033 - Very early conceptual site and floor plan by Wright
House, "Wingspread" for Herbert F. Johnson (is cited in)
Wrightscapes: Frank Lloyd Wright's Landscape Designs (published in)