Trevithick Society
William Woolcock
Robert Waterhouse
John Turner (Historian)
Rick J. Stewart
Peter Joseph
William Webb (19th Century Historian)
Claire Leith
Matthew Loam
Gerald Williams
Penny Watts-Russell
Noel Michell
Peter H. G. Richardson
Simon Goldburn
Martin Bodman
Ronald Perry
Jim Lewis
Roger Langley
Justin Brooke
R. J. Law
Alan Stoyel
Robert Roland Pennington
Michael John Messenger
T. R. Harris
D. W. Davies
James Hodge
John Hambley Rowe
F. B. Michell
W. M. Whetter