Science: Technology: Structural Engineering: Bridge: History: People: Keystone Bridge Company:

Open Directory - Science: Technology: Structural Engineering: Bridge: History: People: Keystone Bridge Company

Descriptive Catalogue of Wrought-Iron Bridges - Facsimile of the company catalogue published around 1874.
Historic Bridges of the Midwest - Photographic records of three bridges constructed by Keystone.
Keystone Bridge Co. v Phoenix Iron Co. - Full text of case before the U.S. Supreme Court in 1877. Concerns the infringement of two patents belonging to the company.

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Last update: Tuesday, January 2, 2007 6:00:38 PM EST - edit