The Drawings of Frank Lloyd Wright: 5 May thouugh 6 June 1987 - Automobile Objective for Gordon Strong, project - FLLW Archive Drawing Number 2505.036: Perspective (p. 3, fig. 15)

Drawing Citation

Drawing 036 - Perspective from below; less detail but more foliage
Automobile Objective for Gordon Strong, project (is cited in)
The Drawings of Frank Lloyd Wright: 5 May thouugh 6 June 1987 (published in)