1965 Streamline Duchess. By the 1960's Streamline was well into their regal monikers. This twenty-two foot Duchess model is one of their smaller trailers. The owner of the trailer is recognized as one of the country's most knowledgeable experts of Streamline trailers and maintains an archive of Streamline information on his website, www.tompatterson.com. The Streamline Duchess is owned by Tom and Marilyn Patterson. Photographed at the Silver Social, Calistoga, California.