Interesting tid-bit about the name "Travel Queen".
While researching the words on Ebay I found somebody selling a 1950 Boeing Aircraft Advertisement about the Boeing Stratocruiser Airplane being lovingly referred to as their Travel Queen.
Possible source of the Travel Queen Truck Camper NameWikipedia says this...
The Boeing 377 Stratocruiser was a large long-range airliner built after World War II. It was developed from the C-97 Stratofreighter, a military derivative of the B-29 Superfortress used for troop transport. The Stratocruiser's first flight was on July 8, 1947.