Here is a link I came across. One thing that I like about this site, is that the person behind it is not a scholar or an architect, but a fan of FLW.
http://www.peterbeers.net/interests/flw_rt/flw_roadtrip.htm
Some of my impressions:
I recall riding my bike daily by that concentration of Wrights near between Lake and Chicago while growing up in OP. I am also not a Wright expert, but I think the Tomek house here in Riverside works so well, especially since it looks at the Longcommon. Unlike some of the homes in OP - which of course are beautiful, but in the end are in a row of houses+ - and like Falling Water, Tomek seems to sit and grow organically out of the surround so perfectly.
I'll call it Riverside's Falling Water. Or, Illinois's Falling Water.
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+the studio (corner) and the big Engl Tudor type of house (Nathan Moore) seem to kind of sit by the themselves on bigger lots - from my recollection.