Did Kit manufacturing make the Kitt Jetstream trailers in 1957 through 1959?

I have a 1959 jetstream 20' (17' living space) single axle trailer that I bought many years ago. At that time I research its history & came across a web site that did lay claim that the jetstream models were made between 56' - 59' although I could not find how many were produced & in what sizes let alone cabin layouts. Unfortunately , I can't find that same web site & cannot find any other kit manufacturing sites that have such info.