Letters and invoices consigning locomotives to the Great Western Railway: invoice of 4 June 1840 from Robert Stephenson & Co; invoice of 12 December 1840 from Robert Stephenson & Co; letter from Robert Stephenson & Co dated 24 Febrauray 1841 re invoice; invoice of 24 February 1841 from Robert Stephenson & Co; invoice of 10 August 1841 from Robert Stephsenson & Co. STEAM 2016-3-23 Audit update: A number of invoices Letters and invoices consigning locomotives to the Great Western Railway 1840-1841