http://www.architecture.org/architecture-chicago/buildings-of-chicago/building/marquette-building/

http://www.architecture.org/architecture-chicago/buildings-of-chicago/building/marquette-building/

http://www.architecture.org/architecture-chicago/buildings-of-chicago/building/marquette-building/

https://en.wikipedia.org/wiki/Marquette_Building_(Chicago)#/media/File:Marquette_Building_exterior_entry_detail_-_Chicago_Illinois.jpg

http://www.architecture.org/architecture-chicago/buildings-of-chicago/building/marquette-building/

http://www.architecture.org/architecture-chicago/buildings-of-chicago/building/marquette-building/