Ashwell & Nesbit Ltd of Leicester, heating and ventilation engineers: unlisted records Accession, March 1979 13 bundles of plans of plumbing and drainage in factories, mills etc., 20th cent Accession, November 1979 c. 80 Rolls of plans of heating installations - 20th cent. Accession, February 1981 Heating plans for Nurse's Home, Chesterfield Union Infirmary (1928-1929); Bolsover Colliery Co. proposed schools (1893); The Macintosh Cable Co., Derby (1926) (26 items) Accession, March 1982 Copy of contract plan for Staveley Iron and Coal Company Ltd, new Offices 1925 Accession, January 1984 Two plans for a weighing machine at the County Asylum, Mickleover by Ashwell and Newsbitt of Leicester, 1899 Accession, November 1992 Engineering Plans 1915-1944 [20th cent]