I am new to the list also.  I am an American in New Jersey.  I will quote
some sources.  Simon and Garfunkel isn't OLD.  I have some of their records
so I will check the jacket.  Here is a repository of OLD music here in
America.  It is public domain and you can print it.

   http://scriptorium.lib.duke.edu/sheetmusic/about.html

Good luck hunting!  I thought Paul Simon wrote the song.  Ask him!

Ben Palmer