Histoire et Technique de la Montre Suisse de Ses Origines a nos Jours.
Bale et Olten: Editions Urs Graf, 1945. Hardcover. Purple cloth boards with gilt lettering; DJ seems to be self-made, but glued on; 270 pp.; profusely illustrated in color and bw. Text is in French. This is a beautifully collected history and techniques of Swiss watchmaking. More