cf. Julie L. Sloan, Light Screens, The Leaded Glass of Frank Lloyd Wright, 2001, pp. 110 and 111.
See also: Julie L. Sloan, Light Screens, The Complete Leaded-Glass Windows of Frank Lloyd Wright, 2001, p. 281.
Hendrikus Wijdeveld, ed., The Life Work of American Architect Frank Lloyd Wright, 1925, p. 52, exterior views and various Steffens House windows illustrated.
The half-chevron serves as the pattern of choice in the Steffens House windows. Wright's use of pale blue glass is rarely seen in his Prairie commissions.