His first printed book, and definitely the most important, is known as the Gutenberg Bible, which was the Latin version of the Bible used at the time. This is the oldest book still in existence ("extant") in the West. He was printing copies of the Bible by 1455. | His first printed book, and definitely the most important, is known as the Gutenberg Bible, which was the Latin version of the Bible used at the time. This is the oldest book still in existence ("extant") in the West. He was printing copies of the Bible by 1455. |