There was a "find" of a stash of the 1963 WS towels about 15 years ago. The dealer who had them at a National put them out 1 at a time, and I had never seen them before and thought they were super rare. After buying it, I walked by his table the next day and saw another one. Turns out he had several. The 1965 WS one is harder to find. There is also a Dodgers War Cry towel which is also pretty hard to find and dates to the 1962-64 period based on references to the Mets and the Colt 45's.
Rick
war cry towel.jpg