Letter from an unknown sender, Dowlais Iron Works, Merthyr Tydril to John Wesley Hackworth Engine Works, Darlington

Is a ‘great admirer’ of Trevethick, has investigated Trevithick’s claims, a worker from the time Rees Jones, drawings by William Llewellyn a personal friend of Trevithick, these are now in the South Kensington Museum, it is clear that Trevithick discharged the waste steam into the chimney.