The Janet A. Ginsburg Chicago Tribune Collection

Caissons in the foundations of Tribune Tower rest upon Bedrock

Cross-sectional diagram of the Tribune Tower foundation showing its caissons with the depth from Michigan Avenue to bedrock at 144.5 feet. The illustration shows the boiler room, coal bunkers, press room mailing room, paper storage, and railroad tracks near Austin Avenue.


14.5 x 14.1 cm

Tribune Company

black and white

  • English

  • still image
  • text

  • These materials are either in the public domain, according to U.S. copyright law, or permission has been obtained from rights owners. The digital version and supplementary materials are available for all educational uses worldwide.

  • The Janet A. Ginsburg Chicago Tribune Image Collection
  • The Janet A. Ginsburg Chicago Tribune Advertisement Collection

  • Chicago Sunday Tribune (October 14, 1934), n.p.

  • application/pdf
  • image/jpeg


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