Scope and Contents Letters of correspondents at the Admiralty.Barrow, JohnLetter, 1 September 1814, of John Barrow, Southampton, to John Macdonald praising his telegraphic system. Folios 1-2.Letter, 13 May 1817, of John Barrow, Admiralty, London, to John Macdonald stating that his work on telegraphic communication has been laid before the Lords Commissioners of the Admiralty. Folios 3-4.Letter, 22 August 1818, of John Barrow, Admiralty, London, to John Macdonald...

Scope and Contents Correspondence concerning treatises by John Macdonald on telegraphic communicationCorrespondence mostly between John Macdonald, the East India Company, and the Admiralty concerning the development and publication of 'A treatise explanatory of a new system of naval, military and political telegraphic communication of general application, in which a comprehensive numerical dictionary, [...] is applied'. (London: T. Egerton, 1817.)Letters of John Macdonald...