Top: Science: Technology: Structural_Engineering: Bridge: History: Bridge_Builders: Keystone_Bridge_Company:
Keystone Bridge Company (3)
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» Descriptive Catalogue of Wrought-Iron Bridges 
Facsimile of the company catalogue published around 1874.
http://www.hti.umich.edu/cgi/t/text/pageviewer-idx?c=moa;cc=moa;rgn=full%20text;idno=AJR3428.0001.001;didno=AJR3428.0001.001;view=image;seq=00000001
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» Historic Bridges of the Midwest 
Photographic records of three bridges constructed by Keystone.
http://bridges.midwestplaces.com/browse/by/builder/keystone/
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» 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.
http://supreme.justia.com/us/95/274/case.html
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Last Updated: 2006-06-28 22:57:01
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