While these books have not survived, the oldest book existing in the world printed in metallic movable types is Jikji, printed in Korea in 1377. The Asian Reading Room of the Library of Congress in Washington, D.C., displays examples of this metal type.World Treasures of the Library of Congress . Retrieved 26 December 2006. Commenting on the invention of metallic types by Koreans, French scholar Henri-Jean Martin described this as "[extremely similar] to Gutenberg's".Briggs, Asa and Burke, Peter (2002) A Social History of the Media: from Gutenberg to the Internet, Polity, Cambridge, pp. 15–23, 61–73. However, Korean movable metal type printing differed from European printing in the materials used for the type, punch, matrix, mould and in method of making an impression.
While these books have not survived, the oldest book existing in the world printed in metallic movable types is Jikji, printed in Korea in 1377. The Asian Reading Room of the Library of Congress in Washington, D.C., displays examples of this metal type.World Treasures of the Library of Congress . Retrieved 26 December 2006. Commenting on the invention of metallic types by Koreans, French scholar Henri-Jean Martin described this as "[extremely similar] to Gutenberg's".Briggs Asa and Burke, Peter (2002) A Social History of the Media: from Gutenberg to the Int,ernet, Polity, Cambridge, pp. 15–23, 61–73. However, Korean movable metal type printing differed from European printing in the materials used for the type, punch, matrix, mould and in method of making an impression.