Over a period of several years, Robert Knapp created the most complete and remarkable collection of American convertibles made between 1946 and 1983. This collection was housed at his Deer Park Automobile Museum and Winery in Escondido, California. Nearly every important American convertible made between 1946 and 1983 was represented, and many made before 1946 as well. Deer Park also included collections of antique radios, televisions, and appliances. Robert Knapp made his fortune in real estate management. The collection was on display to the public beginning in 1979.

Sadly, since the death of its founder, Robert Knapp, Deer Park Automobile Museum and Winery has been in a state of flux. Currently the collection is being managed by Robert's son, Clark Knapp. As of mid-2008, Deer Park has become open the first weekend of each month. The office phone now appears to be 760-749-1666, which contains a tape of open days and hours. If attempting to visit, it is best to check the tape for the most recent schedule. Apparently the collection is still mostly intact. This is the extent of information available the current status of Deer Park Automobile Museum and Winery. If anyone has additional information please email to js@jeffreysward.com.

The automobile collection was well documented in a book titled They Don't Make Them Like That Any More by Robert Knapp. It may be possible to order copies of this book from Amazon or other book sellers.

The Deer Park Automobile Museum and Winery's web site once was http://www.deerparkwinery.com/. A description of Deer Park can be found at this Escondido site.