http://web.mta.info/capital/esa_alt.html

http://www.history.com/news/grand-central-terminal-an-american-icon-turns-100

http://www.iridetheharlemline.com/tag/train-station/

http://www.bizjournals.com/newyork/news/2016/01/25/juniors-and-two-boots-out-as-grand-central-changes.html

http://jewishvoiceny.com/index.php?option=com_content&view=article&id=13518:grand-central-terminal-undergoing-big-changes&catid=112:new-york&Itemid=295

MTA megaprojects: Major changes in the subway we’ll see by 2030

http://go.galegroup.com.remote.baruch.cuny.edu/ps/i.do?&id=GALE|A344574935&v=2.1&u=cuny_baruch&it=r&p=ITOF&sw=w