skyscrapers uc

http://forum.skyscraperpage.com/showthread.php?p=3924331

http://forum.skyscraperpage.com/showthread.php?t=167291&page=149

http://i.imgur.com/9rayyT3.jpg

http://www.skyscraperpage.com/forum/showthread.php?p=6446760

http://forum.skyscraperpage.com/showpost.php?p=6443725&postcount=2497

https://en.wikipedia.org/wiki/Wilshire_Grand_Tower ,
http://la.curbed.com/places/wilshire-grand ,
http://www.cbsnews.com/news/wilshire-grand-is-LAs-newest-skyscraper

https://vincentloy.wordpress.com/2010/09/13/origin-of-the-word-skyscraper