Just curious but anyone have a list of model designation/size grouping with production start and finish dates for all the older dozers?I feel like it would be something handy for us younger fellas who weren't around running theys thing, and an opportunity to learn from the fella's with experience,(Example) D6 9U production started, 19xx ended 19bb Was replaced by (such n such) and so on,Thanks in advance, picture of my D6-9U as tribute to the old heads who ran em brand new. 

Hi, durtrivertruckingcompany.
I think pretty much all of that information is in the Technical library, which can be accessed with a current membership of ACMOC - which, if my understanding is correct, needs to be done through membership of one of the chapters. No doubt, somebody will correct me if I am wrong.

Just my 0.02.

At one time I had a "Production Handbook" from Caterpillar from the 1980's. It had a very good section on previous models, that started with the RD models (1935?, on to what was current at the time of printing ). Had serial numbers, years of production, and horsepower increases note, as well as the speed in each gear. I loaned it out to never see it again.

Are there Production Handbooks in the library?

Ok after looking in for sale and seeing Performance Handbooks for sale, has my memory got it wrong AGAIN? 

ACMOC had at one time a fold out time line pamphlet showing all the tractors as well. it was really done quiet well it was 2-3 feet long.