What is frederick kerby?

Some articles on frederick kerby, kerby:

William Fothergill Cooke - Cooke's Contribution To The Telegraph
... instruments were ordered to be made in multiples by Frederick Kerby for Cooke designated for installation on the Cooke and Wheatstone systems of telegraphy beginning with direct reference ... solely in his name and separate of Wheatstone - would later be confirmed by Kerby ... Instruments based on these principles had been made by Frederick Kerby for the Great Western Railway installations and testimony by Kerby supporting this invention and application ...

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