The name 'Caravan Centre' was used by two companies which manufactured or sold caravans in the 1950's. One of these was based in Queensland (this thread) and the other in South Australia - see here.
It is unknown whether there were any links between these companies. If anyone has information which shows a connection between the two, we will combine the threads. “Caravan Centre” hit the scene with a big splash in 1951 and were calling themselves “Clarke's Caravan Centre” in 1954 ....and don't appear in the 1957 “Caravan & Touring” book.