Frank Lloyd Wright, c. 1916

According to McArthur’s book (cited below), this house and the Burleigh House next door at 330 Gregory were built as demonstration models.

Image courtesy the Illinois Historic Preservation Agency; research courtesy of Paul Ringstrom.

References
• McArthur, Shirley Du Fresne. Frank Lloyd Wright: American System Built Homes in Milwaukee. Milwaukee, Wisconsin: North Point Press, 1983, p. 58B.