SPEEDY TUESDAY ON FRATELLOWATCHES – By R. J. Broer
For Speedmaster fans there is a bible, this bible goes by the name of Moonwatch Only. Authors Rossier and Marquié did a helluvajob and I feel it is the best book out there on the topic. It can (and will) be used as a reference guide but you can also find a couple of interesting background stories in there.
This book can be purchased from a number of sources, including via the Watchprint website. An in-depth review on this book can be found here.
There is also a Moonwatch Only iBooks version available for €30, which is more like a useful go-to e-book.