Join us for a special virtual event (via Zoom) focusing on Graves Light in Boston Harbor, Massachusetts -- one of the world's great wave-swept granite lighthouses. Dave Waller, the owner of Graves Light, will give a presentation on the history of the place and his amazing restoration. Also discussed will be the first-order Fresnel lens that Dave assembled from spare parts, which was recently installed in the lantern room. Kim DiVincenzo, who is producing a documentary film on Dave Waller and Graves Light, will also take part, and she will share a new teaser for the film. The event is free but advance registration is required.