[Letter] 1828 Jan. 8 [to] Robert Stephenson/George Stephenson. [Gives confirmation of the order for a locomotive engine already discussed with the "Liverpool Railway Company"; encloses sketch of the boiler with detailed comments on design of boiler, chimney and wheels; tender will be made at Liverpool. Asks for news from Darlington. Postscript stresses importance of "this Engine ... for all the Engineers in the Kingdom to look at".]