Parkin and Blackwell
of Sheffield
Tools. Steel converters and refiners
1857 Partnership dissolved. '... the Partnership heretofore subsisting between us the undersigned, Joseph Parkin and John Blackwell, in the trade or business of Steel and File Manufacturers, and carried on at Sheffield, in the county of York, in the firm of Parkin and Blackwell, has been this day dissolved by mutual consent...'[1]