It says, "1990: Miglin-Beitler, developer; Cesar Pelli & Associates, design architect; Schal Associates, contractor."
The Miglin in Miglin-Beitler is Lee Miglin, who was murdered by Andrew Cunanan in 1997. I gasped when I realized that.
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In downtown Chicago on June 27th, 2023, at 181 West Madison (formerly known as Paine Webber Tower) at the southeast corner of West Madison Street and South Wells Street.
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Getty Thesaurus of Geographic Names terms:
• Chicago (7013596)
• Cook (county) (7013649)
• Loop (7015700)
Art & Architecture Thesaurus terms:
• architectural firms (300312082)
• building stone (300011700)
• capital letters (300055061)
• contractors (300025052)
• cornerstones (300002616)
• date stones (300374978)
• engraving (action) (300053829)
• gray granite (300011197)
• office towers (300007046)
• real estate development (300055444)
• skyscrapers (300004809)
• standpipes (plumbing) (300006202)
Wikidata items:
• 27 June 2023 (Q69306843)
• 181 West Madison Street (Q200780)
• 1990 in architecture (Q2813053)
• 1990s in architecture (Q74235875)
• all caps (Q3960579)
• Chicago Loop (Q70626)
• Madison Street (Q3276131)
• June 27 (Q2664)
• June 2023 (Q61312788)
• Treaty of Greenville (Q767317)
• Wells Street (Q3567198)
Library of Congress Subject Headings:
• Office buildings—Illinois (sh85094174)
• Skyscrapers—Illinois (sh89004034)
Union List of Artist Names IDs:
• Cesar Pelli & Associates (American architectural firm, active since 1977) (500205650)