Workmen electrifying the East Coast Main Line, 1989.

Section of London-to-Liverpool telegraph cable, 1853.

Section of London-to-Liverpool telegraph cable, 1853.

Working on the East Coast Main Line overhead power lines, c.1989.

Liverpool Overhead Railway poster, 1923-1950.

Power lines above tram track, Innsbruck, Austria, 2007.

BR Electric Locomotive, Bo-Bo, 1958, Clas

NER Electric Locomotive, 'bo-bo', No 1, 190

Stone hopper train on the way to Redmire Quarry on the Wensleydale line. (NRM, NRM_1277/92).

Stone hopper train on the way to Redmire Quarry on the Wensleydale line. (NRM, NRM_1278/92).

'How to build a two valve set', No 20, Godfrey Philips cigarette card, 1925.

Nickel delay-line store, c 1958.