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Keystone Bridge Company (3)

Sites:

http://quod.lib.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

» Descriptive Catalogue of Wrought-Iron Bridges
Facsimile of the company catalogue published around 1874.
http://quod.lib.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

http://bridgehunter.com/category/builder/keystone-bridge-co/

» Historic Bridges of the Midwest
Photographic records of three bridges constructed by Keystone.
http://bridgehunter.com/category/builder/keystone-bridge-co/

http://supreme.justia.com/us/95/274/case.html

» 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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