Just a little sidebar on Admiral Peary.
He had a home on Eagle Island in Casco Bay for many years,and kept his dogs on nearby Upper Flag Island. He kept a megaphone on the front porch of his house,and could occasionally be heard yelling at the dogs to shut up when they got too noisy. The megaphone sits there still. The house is fascinating inside,and has extensive grounds.
The house is now a museum,open seasonally,and there is a ferry service available,or,you can kayak to it from Potts Harbor fairly easily.