Ralph Johnson is a prominent Chicago-based architect and the current principal architect for Perkins+Will. Johnson received his Bachelor of Architecture from the University of Illinois at Urbana-Champaign and his Master of Architecture degree from Harvard University. He began his career at Stanley Tigerman’s office and then joined Perkins+Will in 1976, where he currently serves as its national design director and a member of its board of directors. Wikipedia
The definitive Wikipedia entry for Ralph Johnson. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Ralph_Johnson_%28architect%29