L'Honneur et les Intrigues
Da Vinci Codex
The Da Vinci Codex is a lost book written by Leonardo da Vinci.
The Da Vinci Codex has illustrations and descriptions for the creation of a difference engine. It was a unique item sought by Guy de Bourges, Lucien de Bourges, and their friend Gaston Thibeault for the Duke DeMainz. Others tried to buy or take the Codex from them bought were unsuccessful. DeMainz is said to have destroyed the last copy of the Codex.