Stelzner, Carl Ferdinand - Zacharias Dase, zu seiner Zeit der berühmteste und schnellste Kopfrechner (Zeno Fotografie), Carl Ferdinand Stelzner, circa 1845

Stelzner, carl ferdinand: zacharias dase, the most famous and fastest mental calculator of his time. Date: circa 1845. Collection: 5,000 Masterpieces of Photography.