I’m not suggesting a detailed description of any jigs or fixtures. Just maybe a particularly tricky job and a photo of how it was tackled. Also, I don’t think a lot of these jobs are that specific. They’re all carried out on a mill or a lathe (or other) and may suggest ways for others to do similar but different jobs. One of the things I like about a lot of Harold Hall’s written works is that he oftens takes a fresh approach to how others with bigger machines might approach something and get good results. Even if you can come up with something simpler, the germ of the idea may come from seeing other set ups.