The song is based on poem by Brewster M. Higley and the music is written by Daniel E. Kelley. It is a traditional Amercian folk song.
Recordings of the song have been made by among others Cary Grant, Neil Young and Willie Nelson
This is Pure Premium sheet music with piano backing track available. Follow link inside the sheet music.
Modern romantic sheet music arrangement which can be used as lead sheet (including chords) by Lars Christian Lundholm - Score and part