Licence agreement between Henry Bessemer and Robert Longsdon on the one hand and The Barrow Haematite Steel Company on the other

Signed and sealed by Henry Bessemer and Robert Longsdon in the presence of W. Baker, allowing The Barrow Haematite Steel Co. Ltd., to use patented processes and inventions in the manufacture of cast steel until 1876 on the payment of 2/6d for every ton so made. With accompanying certificate from the Great Seal Patent Office.