Commer Car 3 or 4 Ton Truck - WW1 Ambulance

This is a request for help to find the research,

rather than an actual "design" request.

I hope thats okay here?



I am starting a new project once I find the necessary research material.



Basically I need to learn more about the Commer Car RC 4 Ton Truck

(I think the 3 Ton RC is pretty much the same)

Weight designation is usually load capacity affected by the rear springs and axle.



Anyway, my project is a large scale World War 1 Horse Ambulance.

And I have chosen specifically the Commer Car Ambulance.

Built by Osborn & Co. of London, there were only four of these side loading Horse Ambulances.



I like the simplicity of the Box...the handpainted lettering on the sides...

and the solid wheels.

I also think the Commer Car is kind of cool looking.



This is a 3 Ton RC with a Bus Body.





I've already collected a number of photos and some drawings,

but I am looking for something better.

Plans or actual diagrams of the chassis would be good.

As would actual photos of parts...maybe from a restoration?



I don't need pics of the Horse Ambulance thanks.



And no, I am not interested in the RSPCA Ambulance or the Thorneycroft Swiveling Box Horse Ambulance.