This is a really cool video and if you go to around 24:00, the film, shot from the Mt Washington, goes past Sandy Island "Men's Camp" and docks at Camp Idlewild. There is a nice sequence of water front activities at the camp and shows the launch under way and at the dock sporting a full canopy. There is another camp boat in the video that may be "Babs"
https://www.youtube.com/watch?v=cN7ji0NEGnk