Bound manuscript with lock inlay. Full leather renaissance binding with brass bosses and iron clasps. An iron inlay on both covers locks the book. It has blind tooling decoration (rectangles and flowers). Handwritten laid paper folios. It is a register of the builders working by that time in Barcelona (1766). Conservation treatment: Reinforcement of the structure (loose covers, broken thongs). Cleaning of the binding, fixing the stuck lock and conservation treatment of further metallic elements (clasps and bosses). Dry cleaning of folios and tear mending.