(1) E.B. White’s classic essay in The New Yorker magazine, “Here Is New York”:
http://engl379-oconnell.wikispaces.umb.edu/file/view/White+on+NYC.pdf
(2) A nice piece on how various Manhattan neighborhoods got their names:
(3) An hour-long video on William H. Whyte’s classic study, “The Social Life of Small Urban Spaces.” This is a must-watch:
https://drive.google.com/file/d/0B6FABVlKNnLDVVNFOXpySUhTa3M/view?ts=56a9198f