Collection of 40 column punched cards in two trays used by the London Borough of Merton in I.C.T. (Powers Samas) machinery until 1971 - comprising 21 types of coloured cards for payroll, expenditure and costing, income, stores and creditors. (see file 5715/1/1 and Inv No.1973-576/9)
One of two trays that contain a total of 40 column punched cards used by the London Borough of Merton in I.C.T. (Powers Samas) machinery until 1971 - comprising 21 types of coloured cards for payroll, expenditure and costing, income, stores and creditors. (see file 5715/1/1 and Inv No.1973-576/9)
One of two trays that contain a total of 40 column punched cards used by the London Borough of Merton in I.C.T. (Powers Samas) machinery until 1971 - comprising 21 types of coloured cards for payroll, expenditure and costing, income, stores and creditors. (see file 5715/1/1 and Inv No.1973-576/9)
