A recent lost Frank Lloyd Wright-designed building was the Wilbur Wynant House, formally of Gary, IN. It's loss is felt even more, since it was a rare example of the American System-built Home designs Wright developed for Arthur Richards between 1912-1916. Here's a link to a website that features a rendering of the Wynant House as it once looked. If you're interested in touring a fully restored ASBH Model B1 house, visit the Wright in Milwaukee website.
Image via ireference.ca