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![]() BABBAGE, Charles (1792-1871). Inventor of the mechanical calculating machine. Autograph Letter (third person), 1 page 16mo (old repair to lower left hand corner, traces of mounting on the reverse), Dorset Street, 8 June no year [before 1852]. Regretfully declining an invitation to dine with Sir William and Miss Keir Grant. Sir William Keir Grant (formerly William Keir, 1771-1852) was a distinguished army officer. [No: 21661]
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