Supplement No. 2 to Electrified Lines Instructions (Direct Current System)
BR instruction booklet "Supplement No. 2 to Electrified Lines Instructions (Direct Current System) dated 7th November 1966" dated Waterloo Station, May 1974.
BR instruction booklet "Supplement No. 2 to Electrified Lines Instructions (Direct Current System) dated 7th November 1966" dated Waterloo Station, May 1974.