This is the first book to be released by Squadron Signal Publications in their Historical Reference series. As explained in the front of the book, this series is written by using in depth research of primary documents, giving a very detailed look at the subject matter. It appears that there may other books in the works covering aircraft and vessels. In my opinion this book is like a Walkaround or an In Action series book on steroids.
To me, this book starts off in an unusual manner. It starts by covering the people and the committee who were involved in the development of the DUKW and not the actual vehicle. This really helps give a good understanding both to how this vehicle was developed and the background of the people involved. Doyle then takes you through the different processes that led to the production of the duck, its wartime usage, post-war usage, variants, and its use in the civilian world even today.