Richard Deas of www.bnnrs.net/ (Bassetlaw (North Notts) Railway Society).
www.gcrsociety.co.uk (The Great Central Society).
Most Signalbox diagrams kindly provided by the 'Industrialogical Associates Collection' permission granted by Andy Rush.
John Saxton of www.lymmobservatory.net
The Peter Churchman Collection:
Chris Booth, Signaller and work collleague (within NR), Worksop PSB. See his own fantastic collection, collected over many years by clicking on this LINK.
M. A. King & B. Gellatly from the Great Central Railway Society
Mick Charlesworth, Mobile Op's Manager, Sheffield.
Michael Kaye, Driver for East Coast Railway Co.
Derek Wilson; See his own collection by clicking HERE.
John Law; see his fantastic huge collection by clicking HERE.
My collection was very small when I started this website and without the above contributors it wouldn't have been as successful as it has become, so thank you.
Special thanks to the following individuals for contributing pictures and information: