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An Illustrated History of Great Northern Railway Signalling by Michael A. Vanns is a comprehensive examination of the signalling systems employed by the Great Northern Railway (GNR) from its inception in 1848 until its absorption into the London & North Eastern Railway in 1923. Published in 2000 by Crecy Publishing, this hardcover volume spans 128 pages and is richly illustrated with black-and-white photographs, drawings, and plans, providing a detailed visual record of the GNR's signalling practices.