It was about this time that automakers moved away from the traditional wood-framed 'Woody' station wagon. Manufacturing techniques had been improved during World War II and it allowed to get away from the labor intensive process of building wood bodies that needed regular maintenance.
General Motors unveiled the all steel Chevrolet Suburban eight passenger transport on a truck frame in 1938. Plymouth built the first all steel wagon on an automobile frame in 1949. Jeep claims to have offered America's first all steel station wagon in 1946. It's hard to say whether this claim is valid.
Today, the wood framed wagons carry all the prestige. But it used to be the other way around.