Letter to Mr Robertson from George Stephenson

Letter signed in Newcastle on Tyne by Mr Geo[rge] Stephenson, starting with a greeting 'Dear Robertson'. On reverse addressed to Mr Joseph Locke, Civil Engineer, Balton-le-Moors, including a wax seal. Presumably letter was delivered to Mr Robertson via Mr Locke. Letter describes how correspondent "Robertson" was met by Stephenson only briefly one year previously and is in partnership with "Mr Sharpe". Robertson may therefore possibly be Richard Roberts. Stephenson asks Robertson to find him a foreman "capable of taking the charge of a steam engine manufactory in my absence" and refers to Locke as one of his assistant engineers. A page, possibly bearing message to Locke, now missing (torn off).