I was finally accepted and now maybe I can get somewhere. I am an antique engine machinist and have worked on a few of the older Cat engines some of which my company head posted some photos up on this site sometime ago. Right now I am working on a 1918 Holt stationary, the book I have is for a Cat 45. I do have a casting number or part number off of the crankcase and it is A19. I need some photos of one of these engines to be able to see how the governor and other parts are configured on it. Any help at all will be greatly appreciated and when I figure out how to upload photos here I will post the progress. right at this time I have the babbit work all done, rods and mains and the bearings all fit up. The valves I am in the process of making and the jugs will either be sleeved and the pistons ground or build up the pistons and bore out the jugs.