Les Transformateurs d'Énergie: Générateurs, Accumulateurs, Moteurs, avec les plus récentes applications à la navigation aérienne, published around 1910 by Librairie Commerciale Arist. Quillet in Paris. • Content: The work is an illustrated technical book featuring numerous monochrome illustrations and coloured plates that detail the internal workings of various machines from the era. • Topics Covered: Specific topics and machines covered include: • Steam locomotives, dynamos, motors, and turbines. • Gas boilers and various automobiles. • Early aviation technology, such as an airship, the Wright brothers' plane, and a Voisin plane. • Telegraphic equipment and batteries (accumulators). The complete work is sold here id issued in two volumes—one volume containing the explainatory texts and imagws and scientific descriptions and the other containing the stunning lift-the-flap plates and llustrations The condition of the lot is excellent. All plates are in place and without any damages to the flaps or any of the intricate details of the diagrams. The associated book of texts and images has a few loose pages but is also complete. Size of the boom is roughly 30cm by 20cm