I bought this crumbling old volume for one whole pound. Attracted to its title, I imagined it would tell me everything I needed to know. Unfortunately, all it's told me so far is how to build a locomotive, why the children of Topsy-Turvy Land are all so bleedin' pleased and how to train my own kids for that "harder work ahead".
Perhaps not as immediately useful as I'd hoped, it has its moments nevertheless; there's a fine section on letterpress for example. It turned out that this was just volume five of, I'd guess, around ten but a pound for a tenth of the world's knowledge isn't bad value for money, according to my calculations.