This detailed map covers the industrial area east of Middlesbrough, on both sides of the River Tees. Features include the Clarence Ironworks, Salt Works, Clarence Old Cottages, Middlesbrough Dock, Cargo Fleet Ironworks, Tees Iron Works, Normanby Ironworks, Ormesby Ironworks. The map is notable for its maze of railway sidings and lines in and around the various ironworks, all shown in remarkable detail.