Below are a couple of Art Moderne houses in Wilmette that I stumbled upon in recent months. They're only a mile or so apart in a quiet neighborhood, surrounded by more traditional houses.
Art Moderne is exactly what the name suggests - part Art Deco, part International Style, with some Streamline thrown in, yet not quite any of them. There's ornament, but it's more about abstract patterns and geometry than anything applied or figurative. Curved walls contrast with blocky massing, and focal points are provided by round windows, art glass, or glass block. The style tended to produce rare but lovely houses like these.
1910 Greenwood Avenue, Wilmette - Andrew Rebori, 1936
1708 Lake Avenue, Wilmette - John Burns House, 1937, Roy Walter Stott
See also - a student report from School of the Art Institute of Chicago, featuring a few additional houses of similar vintage and style in the area.