June manages to avoid the threat of paper cuts to find... That the book is a perfectly mundane book about machines, mostly focused on steam power. The first chapter is a very in-depth discussion of the mechanisms of a sewing machine. One driven by steam or running water, so a pretty old-fashioned one. But he might be able to learn a bit about how to operate such a machine from these diagrams. Other sections discuss locomotives, steam engines, revolvers, and forms of steelmaking, among other things.