Patrick Coad, patentee of the galvanic battery, and interesting miscellaneous items

I am almost finished processing a small collection, Patrick Coad Family Papers (MC 37). An online finding aid will soon be available. Patrick Coad, undated Patrick Coad (1783-1872), an Irish immigrant who settled in Philadelphia, was the first American patentee of a graduated galvanic battery with insulated poles. Coad was a noted teacher and

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