It occurs to me amateur watch repairers might benefit from and be unaware of some of the books professional watchmakers might have in their libraries. I am not suggesting three page book reports but a photo if possible and a sentence at least describing the tome would be helpful. I don't know where to begin as there are so many to choose from. Some technical, some historical and some that offer perspective. I think this is good stuff because it is the most important tool in the shop. No one ever died from too much edimication.
I will start with a book you have seen me promote several times on the WUS forums because I believe it gives context and perspective on watchmaking historically. It also was made into a PBS movie. A relatively easy book to read and it is a riveting story. I actually was moved to go to London after reading it and see the "subjects" on display at the Maritime Museum. I dragged my wife along and it turned out to be the highlight of our trip.
The book is Longitude written by the author Dava Sobel. Available in most bookstores often for a couple of bucks.
This is the story of the quest for a watch capable of keeping time accurately enough by which to navigate the high seas. Up until this time sailing was dead reckoning. "Where ever the wind takes me" The story is captivating because the King Edward II has offered a Kings ransom to any man that can offer a watch accurate enough to determine longitude. The man that captures the Kings imagination is John Harrison, a carpenter.