Whats the name of the book? Or Author?
The book on the underground city beneath Edinburgh is called "The Town Below The Ground, Edinburgh's legendary underground city," by Jan-Andrew Henderson.
It's published by Mainstream Publishing, of Edinburgh.
The book on the lost islands of NYC is a book I bought at the Governor's Island book shop.
They just opened up Governor's Island to public tours, it is WAY cool!!
Not as cool as exploring Gold Field or Gold Point, Nevada, two ghost towns in the Nevada high desert, but still, very, very neat to explore.
Ed