The Davistown Museum website offers an account of The Eccentric Hermits of Davistown—two early residents of Davistown (now Montville) who inspired an eccentric character in Ben Ames Williams' 1940 novel Come Spring.
One of the hermits, Timothy Barrett, came to Davistown in 1793, and lived in "a cave dug into a clay bank ledge up above Ruffingham Meadow, on a stream that now bears his name." Couldn't happen today, right? Compare this article from the Kennebec Journal of Sept. 28, 2005:
A 43-year-old man who has sculpted a home out of nearly 100 feet of rocky Kennebec River bank in the past year may be forceably evicted by police today.The American Memory project has four photos of the "Hermit of Maine," who in 1936 was entertaining visitors to his Freeport shack by playing on his "2 organs and one piano built together."
Augusta police Lt. Peter Couture said Randy Reed, a 43-year-old transient with mental-health issues, could be arrested today if he refuses to leave his cave-like outdoor home. [Source]