They are great aren't they. My oldest is an 8th edition and it is the the one that covers the 1920s. I have only seen two 8th editions and bought them both. My buddy with the local salvage has one of them so if anything ever happens we will have at least one between us. I am after a first edition if one ever shows up but I doubt my pockets will be deep enough. I also have most years of the foreign and the Eaton axle Hollander manuals also.