The global conflict of the first half of the 1940s created a pronounced housing shortage and mass market for the emerging trailer coach. Around this time, the smaller trailer coach began to morph into a somewhat larger type of abode, which was referred to as a "mobile home". Eventually, there would be two different classifications; the shorter "travel trailer" (later known as an RV or recreational vehicle) and larger house trailer / mobile home.
The typical lengths of new mobile home models was still in the 15-to-27 foot range...with the big time promotional buzz word being LIVEABILITY. There could be "room to spare" in quarters no larger that 200 square feet...or so said the typical mobile home ad of the day. Naturally, super-compact designs made sure that every inch of interior space was used in the most efficient manner possible!
There's room to spare in this "big, new" 1945 model, 8 x 27 foot house on wheels.
Advert from http://www.allmanufacturedhomes.com/html/vintage_mobile_homes.htm
(Atlas Mobile Home Museum)
Click on image for a larger view
The quote-unquote "large" living room seen above seems quite cramped by today's standards. One needs to take into account the severe housing shortage that gripped the nation in the years immediately following World War II. The typical newly-wed couple of the time would have considered themselves indeed fortunate to be living in such an abode. How times change!
Advert from http://www.allmanufacturedhomes.com/html/vintage_mobile_homes.htm (Atlas Mobile Home Museum)
The original caption reads "With the accent on interior designing in 1949 models, the mobile home builders have concentrated on beautiful wall surfaces. In the home shown here, living room walls are of luxurious wood, decoratively pegged and topped with a fluted cornice which conceals indirect lighting. Wall-to-wall carpeting, draw draperies and an upholstered valance complete the picture of livability."
Photo from the Milwaukee Sentinel