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. |