AT&T Corporate Headquarters
AT&T Corporate Headquarters

From left to right:

Exterior perspective.
Source: Wikimedia Commons / Photo: / CC3.0 BY-SA
Image source

Perspective from below.
Source: Wikimedia Commons / Public Domain
Image source

About Philip Johnson

American , 1906-2005, Cleveland, Ohio, based in New Canaan, Connecticuit

About John Burgee

American, b. 1933, Chicago, Illinois