It was/is an interesting book. The author gives lectures and tours during August around the NYC area (see 'Events'). August 1776 was when the British invaded Brooklyn (near Coney Island). It was known as the 'Battle of Brooklyn', or 'Battle of Long Island'. Bkyln is actually part of Long Island, as is Queens. (assuming, of course, you aren't in or from NYC)
The Hudson Highlands is a lovely area and used t o attract landscape painters from Europe. I lived in the area for years and for two of them I could see them from my front window. New York State is a helpless captive of NYC.