Ludwig Ritter von Köchel since undergone revisions. Mozart's works are often referred to by their K-numbers ("cf." opus number); for example, the "Jupiter" symphony, "Symphony No. 41" K. 551. Moreover, Köchel arranged Mozart's works into twenty-four categories, which were used by Breitkopf & Härtel when they published the first complete edition of Mozart's works from 1877 to 1910, a venture partly funded by Köchel. He also catalogued the works of Johann Fux. Ludwig Ritter von Köchel Ludwig Alois Friedrich Ritter von Köchel (; 14 January 1800 – 3 June 1877) was an Austrian musicologist, writer, composer, botanist and publisher. He is best known for
Austrian Americans some 40,000 Austrians entered the United States. Since the 1960s, however, Austrian immigration has been negligible, mostly because Austria is now a developed nation, where poverty and political oppression are scarce. According to the 1990 U.S. census, 948,558 people claimed be of Austrian descent (only 0.4 percent of the total population). In the 19th century, a total of 4.2 million Austrians had immigrated to the United States. Austrian immigrants adapted quickly to American society because the Austrian Empire had also been a melting pot of many cultures and languages. On the other hand, despite the rejection that Austrians feel toward