- 1Complete Patent Specification for 'Improvements relating to the Shrouding of the Moving Blades of Turbines and Axial-Flow compressors'. (YA1999.39/1/16)
14 April 1965, item - 2Complete Patent Specification for 'Improvements in or relating to a Steam Turbine Plant'. (YA1999.39/1/21)
29 December 1967, item - 3Report on a visit to A.E.G., Berlin by Dr. A. Frankel and Mr. F.R. Harris. (YA1999.39/2/12)
3 October 1963, item - 4Report on visits to U.S.A. and Canada to discuss design problems by Dr. A. Frankel. (YA1999.39/2/34)
2 July 1963, item - 5Report on a visit to General Electric Company, Schenectady by A. Frankel and H.M. Milling. (YA1999.39/2/43)
26 April 1965, item - 6Sectional Arrangement Drawings - Steam Turbines. (YA1999.39/5/1)
c.1939 - c.1970, item
