Between 1951 and August 1958, approximately 1,000 Camper Box conversions were made by Westfalia, the official Volkswagen Camper conversion coachbuilder. In August 1958, the SO models were introduced. The SO is short for German: Sonderausführung, meaning Special Model.
Westfalia special models included the SO-23; the SO-34, SO-35, SO-33, SO-42, SO-44 and SO-45.
Volkswagen Campers were available from Volkswagen dealers worldwide and were also delivered via the Tourist Delivery Program — whereby a customer would pick up their new van in Germany, drive it in Europe – when VW would then transport it home. Many Volkswagen campers were purchased by USA Servicemen and brought back to the USA in the 1950s and 1960s
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