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Experimental notes, working papers, correspondence and lecture summaries compiled by Charles Wheatstone, 1836-1875, and photographs collected by him in that period. Notably including papers relating to the development and testing of the telegraph, [1836-1960]; descriptions of experiments and test results concerning the measurement of electromotive forces and electrical potential, [1840-1875]; experimental observations on the nature of magnetism, electricity and thermodynamics, including electromagnet design, batteries and dynamos, [1834-1855]; working papers relating to optics including experiments into refraction, colouration of compounds and polarisation, [1850-1875]; drafts of lectures on sound and musical instruments prepared by Wheatstone, [1832-1837]; material relating to the management of the Wheatstone collection of scientific instruments and library, 1890-1992; biographical material relating to the life of Wheatstone, the invention of the telegraph and Wheatstone's musical instrument manufacturing business, with unrelated newspapers, 1757-1975; stereoscopic photographs and glass negatives taken by Roger Fenton, Samuel Buckle, Jules Duboscq and others, featuring landscapes, still lifes, panoramic scenes of cities including Paris and Moscow and the interior and exterior of the Crystal Palace, Hyde Park, Sydenham, 1851, and especially the Exposition Universelle, Paris, 1855, [1850-1901]; artefacts from Department of Physics, King's College London, including demonstration equipment, telegraph apparatus, a nail fiddle and other prototype musical instruments, [1834-1875]; exhibition of scientific and musical instruments, [1834-1875].

Papers and consultancy reports, 1961-1976, mainly relating to dams and disasters, including reports on the Tannur dam, Jordan, the Roxo dam, Portugal, and the proposed dam at Scammonden, Yorkshire; report on the Clarkston disaster, Glasgow, of 21 October 1971; numerous photographs of the Aberfan disaster, Glamorgan, 1966. Obituary of Nash in Quaker Work , 1985.

Out letter book, 1848-1852, containing copy letters relating to applied chemistry, in particular to the role of Professor William Allen Miller as a consultant retained by the Western Gaslight Company, and charged with improving the efficiency of its manufacturing facility at Vauxhall, Surrey, and in a similar capacity to undertake the analysis of particulate residues and other by-products of incomplete combustion in an industrial setting; the experimental analysis of various phosphates and salts; commentary upon the telegraph and upon suggestions that the earth itself could act as a substitute electrical conductor over distances. Chemistry teaching and research notes, c 1845

Typescript copy of the memoirs of Harry Gooding Field entitled 'Adventures in Finance', 21 Oct 1942, detailing his accountancy career working in Canada, the United States, Malaysia and Singapore, with copies of birth, marriage and death certificate and other official documents relating to Harry Gooding Field.

The collection comprises copies of printed material, 1907-1984, including history of Perry and Co, builders and contractors, with list of completed building projects, photographs of founders, and notes on the company's projects including St Thomas's Hospital, London, Tower Bridge and numerous Underground railway stations including Oxford Circus and Piccadilly Circus, [1907]; copy of article on the Perry & Co employee, Sir Herbert Henry Bartlett, by Sir Basil Bartlett, printed in David Jeremy ed., Dictionary of business biography (London, 1984); manuscript pedigree describing the relationship between the Robinson and Bartlett families, to whom the donor was related, [2000].

Bound volume containing papers relating to the activities of the Portuguese East India Company, 1628-1633, collected and annotated by Ataíde, and including letters from company representatives at Goa, papers relating to the fitting out and repair of company ships at Lisbon and Goa; memoranda of company export purchases, particularly pepper and indigo, price lists and balance sheets, 1629-1633, and report of judicial court of enquiry held at Goa in 1630 in connection with the fitting out of the carracks SANTO IGNÁCIO DE LOYOLA and BOM JESUS DO MONTE CALVÁRIO.