Cannon Trials Cars

I wonder if anyone can help? I'm searching for images of sporting trials cars from the 50's and 60's period. I'm particularly looking for images of Cannon's and derivatives such as Cottons and Nymphs. The reason is that I'd like to piece together a history that I could eventually publish and could involve any other interesting information that might turn up such as the Skiddaw and Ben Nevis attempts of the sixties. If you have anything you think might be of interest , even the smallest thing, please let me know as there is very little documented .

Yours gratefully

Mark Milne