- 1Collection of technical drawings and trade literature relating to a Kearns Borer supplied to UMIST. (YA1986.150/MS0268)
1954-1960, fonds - 2Patent Universal-Surfacing-Boring-Milling-Drilling & Tapping Machines (YA1996.2139)
1939, item - 3Photographs from George Richards & Co. (YA2007.64)
c 1950- c 1960, fonds - 4Collection of Engineering Trade Literature and Drawings (YA2008.47)
c 1930 - c 1975, fonds