NYC history...

https://i.kinja-img.com/gawker-media/image/upload/s--sjEKpdMi--/c_scale,fl_progressive,q_80,w_800/tb42uvoband29fzr0scv.png-
http://gizmodo.com/11-birds-eye-views-show-how-nyc-has-grown-over-350-year-1631890458

http://www.ashford.zone/images/old/6a00d834515b2069e20133ed97636a970b-500wi.jpg

http://ngm.nationalgeographic.com/2009/09/manhattan/miller-text

http://www.boweryboyshistory.com/category/planes-trains-and-automobiles

http://www.boweryboyshistory.com/2015/09/100-years-ago-today-seventh-avenue-collapsed-under-rush-hour-traffic.html