'Conversion to Electric Drive No. 1 Wapping Pumping Station' Technical drawings and plans, most prepared for the London Hydraulic Power Company by Metropolitan-Vickers Electrical Company Limited, the Hydraulic Engineering Company Limited (Chester) and the London Electricity Board (Northern Sub-Area). Includes handwritten descriptive list of drawing nos. 1-63. Drawing nos. 1 and 8 from this list are missing; no. 3 was not used. Originally contained in a box folder marked 'Conversion to Electric Drive Wapping Pumping Station' on the front, and 'Conversion to Electric Drive No. 1 Wapping Pumping Station' on the spine. 1952-1961