Rhys Jenkins, mechanical engineer: notebooks containing notes on mill machinery, patent chronologies, roller mills and tinplate references 1878-20th cent (Acc 1040)
Arthur Titley, mechanical engineer, President of the Newcomen Society: corresp, notebooks incl notes on the history of engineering, transcribed letters of Richard Trevithick (1830-1832) c1880-1929 (Acc 1041)
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