Joseph Fischer, S.J. (German: Josef Fischer; 19 March 1858 – 26 October 1944) was a German clergyman and cartographer. Fischer had an eminently successful career as a cartographer, publishing old maps. In 1901, while he was investigating the Vikings' discovery of America, he accidentally discovered the long-lost map of Martin Waldseemüller, dated 1507. This map, which claims to update Ptolemy with the voyages of Amerigo Vespucci, is the first known to display the word America.[1] The map was purchased from its owner by the United States Library of Congress in 2001 for ten million dollars.[2][3]