Columbus's Most Prized Possession 

On January 5, 1502, prior to his fourth and final voyage to America, Columbus gathered several judges and notaries in his home in Seville. The purpose? To have them authorize copies of his archival collection of original documents through which Isabel and Fernando had granted titles, revenues, powers and privileges to Columbus and his descendants. These 36 documents are popularly called "Columbus' Book of Privileges." Four copies of his "Book" existed in 1502, three written on vellum and one on paper. The Library's copy, one of the three on vellum, has a unique paper copy of the Papal Bull Dudum siquidem of September 26, 1493, which extended the Spanish claim for future explorations.