Image credit: Sears
Between 1908 and 1940, Sears Roebuck sold over 70,000 houses in 447 different designs. They were not strictly prefabricated, but were precut packages that included the lumber, siding, windows and even the nails. While the look was traditional, in fact they were very modern, bringing the latest residential technologies to everyone.
I recently visited one at the the Sanibel Museum on Sanibel Island in Florida.