That looks like an interesting book!
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)