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Letters, tradesmen’s accounts, inventories of plate, specifications, tender and other papers of the 4th and 5th Earls, all concerning the contents of Birr Castle or improvements and alterations to Birr Castle and demesne and
to houses and cottages owned by the estate – the installation of motors and turbines, plumbing, lighting, heating, redecorating, ‘hacking off’ plaster-work, etc. [Not in chronological order. For other inventories of plate, etc, see H/8 and T/83.]

Original bundle of letters and papers concerning the 4th Earl’s patents for a machine which he had invented for removing leaves and other matter from turbines, 1901-4; together with notes on his experiments with electro-plating, 1908. [Not in chronological order.]