Music for the Nation

[Gryvix]

The library of congress happens to have put an extensive collection of sheetmusic online from the 19'th century.
I love to play a few pieces from them now and then. There are also full method books in there like the legendary methode pour cornet a pistons by Arban and such.

http://memory.loc.gov/ammem/mussmhtml/mussmhome.html