There were only two prototypes of these homes designed by Buckminister Fuller...there is one at the Henry Ford Museum in Dearborn, Michigan...I have seen it and have to tell you how amazing it is! It's totally amazing that the Dymaxion was completed during 1929 after two years of development, and later redesigned during 1945. These were to be factory kits to help the after the war.
* I don't know why I was thinking about this lately...but it's amazing! If you ever get a chance to see it make sure you do, I've seen it a few times on my visits to Greenfield Village (which is where the Henry Ford Museum is in the Detroit suburbs)...it's totally fabulous!