Confidential ts. report, 1 vol; 30.5 x 21.5 cm. A report on the application of Orion to the ordinary branch procedures of the Prudential Assurance Co. Ltd  by Ferranti Ltd, The London Computer Centre, 68/71 Newman St, London W1.. With 3 loose sheets (Main File Edited; Main File Edited Stage; Main File - Edited - Average Policy with no Optional Items) and ts. 'Outline of Orion New System' of 1964 May 6 (3p. + flowchart).