For decades I have been fascinated by Andre Citroen. His character was so diverse, at once gifted, generous, pragmatic, flawed and this book has filled in many details for me. In contrast I knew almost nothing about Gabriel Voisin but now I want to learn as much as I can about this man who achieved so much. Andre Lefebvre, the link between these two great pioneers, is shown to be a visionary engineer capable of taking on a project of his own or that of others, experimenting, modifying and rethinking it, enthusing colleagues and then creating an object of aesthetic and engineering beauty, even when restrained by financial and production reality at work and family difficulties at home. A fascinating insight into a small society of friends, families and financial connections in the fifty years prior to the second World War. Amazingly well illustrated, if the book has a fault it is the flat and dull style in which it is written which may disappoint less enthusiastic readers.