Start with high-confidence new england travel books, then narrow by subgenre or adjacent topics.
The Lobster Coast
Colin Woodard
Bootleggers, Lobstermen & Lumberjacks
Matthew P. Mayo
What They Never Told You About Boston
Walt Kelley
Weird New England
Joseph A. Citro, Mark Moran
Canoeing in the Wilderness
Henry David Thoreau, Will Hammell
New England's Hidden Past
Dan Landrigan, Leslie Landrigan
A Week on the Concord and Merrimack Rivers
Henry David Thoreau
Wild! Weird! Wonderful! Maine.
Earl Brechlin