Trevithick Society
Susan M. Pearce
Tony Fairclough
Michael John Messenger
Colin Buck
Adam Sharpe
Richard Cole
Peter Herring
Archaeology ..
Andrew C. Young
Andrew M. Jones
N. J. Cahill
Cheryl Straffon
Martyn Jackson,
Helen Harris
H. L. Douch
A. D. Saunders
P. J. Fowler
Dorothy Dudley
Paul Ashbee
Charles Thomas
Vivien Russell
Frank Turk
Patricia M. L. Christie