Spring Fling in New England fiberglass trailer rally in Tamworth, New Hampshire is coming up May 16 - 18th. It's held at Chocorua KOA so reservations are required. A few sites were still open when I last checked. Go to springflingne.org for details.
For those interested, I have started a page of photos of the Spring Fling rally & will add to it as the rally progresses.