I found this Carter Carb Sales and Service Manual at a garage sale. I almost passed it by without a peek but somehow it got my attention. The original copyright dates are '33 and '42, which carb info going into the mid '50's.
It covers prewar and post war Carter Carbs for all makes and models, most of which I have never heard of. It does list the ETW1 but has no spec sheet on it.
But it has the MB carb for the jeep and a mountain of other stuff. There is a section on govenors but I am not sure if the one our trucks use is listed.
The gallery of these with a few more and larger versions of above.
1953 USAF M37 wow, restored
1962 M151 Ford Production, on the rotisserie now
1953 USMC M37 w/w -in storage
1942 M6 Bomb Service Truck (sold to UK collector)
1967 M116A1 Pioneer Trailer
1968 M101A1 Trailer
S-89 Comm box