Alot of good pictures, alot of issues too. I don't know if I should blame the author, the editor, or the Chinese publisher. Some information is blatantly wrong, I'm not a John Deere expert, but I do know what an unstyled Model A looks like. The pages that were supposed to be about the unstyled A contained pictures of a completely different non-row crop tractor. One model has the same picture twice on opposite pages, but different sizes, this simply isn't acceptable. The modern tractors are almost all European varieties, many having never been available from American Deere dealers. The chapter on the 440 log skidder has specs for a 540E, a model produced nearly 20 years later that is a whole lot bigger. The fact that they are specs from a 540E is pointed out to us, but not the fact that the 2 machines share nothing besides the name on the hood. The pictures show a 440C, a later model. Do a web search for photos of both and it's easy to see. There are some good photos, and some good information, if you know what to believe, and not to believe.