Answer
The architectural wonder is the ranch style home. Taken from pioneer homes and modernized by Cliff May and others it took on a new look for the post war boom. Communities of 100 to 200 of the same $8,000 to $10,000 home were common, but huge plots, mostly in the west, but also places like Bloomfield Hills, Michigan, totaled 1500 homes. Some of the developers put up three homes a day. One story, low pitched roof, open plan, picture windows, exposed rafter beams, rambler. Homey touches like Dutch doors, board and batten siding, shake shingles, overhang roofs, and rustic brick and stone fireplaces were supposed to excite the pioneer spirit. In the 1950's people stood in line to walk through and fought to be the owner of these modern informal horizontal "grassroots" homesteads. By the 70's with land at a premium "up" became better and the once coveted ranch stood for the ticky tacky tracts that were now in disfavor. Today, the picture windows are gone, dormers and second floors added. The ranch of the 1950's is the magazine makeover of today. Oh, and yes the ranch did show as a house of tomorrow type in the 1939 fair--but in San Francisco.