Gutenberg Bible, known also as the Mazarin Bible and the 42-Line Bible, Latin edition of the Bible, printed at Mainz, Germany, sometime between 1450 and 1456. Although German bibliographers claim that it was printed by the German printer Johannes Gutenberg, the edition may have been finished and perfected by Johann Fust, a wealthy financier who gained Gutenburg's share of the business in a lawsuit; and Peter Schöffer, Gutenberg's assistant. The book is the first volume known to have been printed with movable metal type. The first copy that attracted attention was discovered about 1760 among the books of the French statesman Jules Cardinal Mazarin. Of the 47 extant copies, the finest known was acquired by the Library of Congress, Washington, D.C., in 1930. Only two other perfect copies are known to exist.