Letters to Thomas Larcom, topics include the preservation of the original plans of the Ordnance Survey, the Milan survey, the Indian survey (1825), Robert Ball’s project for a Natural History Society (1838), Wiggin’s agricultural maps of Ireland (1845), Dr. Faraday on printed inks (1834), Charles Vignoles on the Irish railways (1841), and Grantham’s observations on a survey of the River Shannon. Correspondents include T. Hutton, Edwin Wyndham-Quin, Viscount Adare and Mr. Gardner,

1830-1835.
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