I'd say there is a good chance the catalog is Canadian as several have pointed out. However, the front cover and first 32 pages are missing. But what a wealth of information it contans! I know our friends up north spell lots of things wrong, but the word catalogue is the only difference I've seen going through the manual. It has quite a number of broken down photos and corresponding part numbers. I do know the Harrison number for the radiator for my truck matches what you would look for in the states. Makes me wonder how different Canadian versions were from US of A back in the 40's to 50's.