I have a 1958 user handbook covering:-
Truck, 3 ton, GS, Cargo, 4 x 4, Bdford R
Truck, 3 ton, GS, Cargo, with winch, 4 x 4, Bdford RLW
Chassis, 3 ton, GS, Recovery, Light, Bdford RLC
As far as I am aware it is complete, 133 pages the last being Appendix 4 - Preparation For Airportability.
It it is of any use or interest to anyone please drop me a line or PM me.