Start with high-confidence northeast travel books, then narrow by subgenre or adjacent topics.
Booked
Richard Kreitner
100 Parks, 5,000 Ideas
National Geographic, Joe Yogerst
New England's Hidden Past
Dan Landrigan, Leslie Landrigan
The Bowery Boys: Adventures in Old New York
Greg Young, Tom Meyers
Birds of New York Field Guide
Stan Tekiela
Walking New York
Keith Taillon