Tuhia he tohutoro mō tēnei rārangi - I muri mai i honoa ia ki tētahi kamupene whakaputa maheni i Pittsburgh, me ngā niupepa matua i New Orleans, Louisiana. I uru ia ki te kaipuke paowa i te awa o raro o te awa o Mississippi mai i te 1841 ki te 1847 me te keri koura i California i te 1851. I awhina ia i te hanganga o te Cambria Iron Works i Johnstown, Pennsylvania, i te 1853, a i whakamahia e taua kamupene tae noa ki te 1861, i tana wehenga atu. He mema a Campbell ki te Huihuinga Motu Republican tuatahi i Philadelphia i te tau 1856
He aha?