W H Challis

Call of Ashendom: Book One by James W.H. Challis Raider Publishing International Paperback 23 March 2010 from£13.48 | RRP: ~~£9.99~~
British Railway Signalling Practice - Electrical: A Combined-volume Reissue of the IRSE Green Booklets No.7 (Signal Control Circuits), No.9 (Track ... Power Supplies): Signal Control Circuit No.7 by J.P. Loosemore,W.H. Challis,D.L. Mitchell P.Kay Paperback 1 September 2001 from£N/A | RRP: ~~£8.95~~