Two tunes (other than SMM, Spilman, and Hume) are at Levy:

Title: Sweet Afton Water. A Ballad.
Composer, Lyricist, Arranger: By Robert Burns. Music Composed and Arranged by William J. Wetmore.
William J. Wetmore Publication: New York: W.E. Millett, No.329 Broadway, 1838.
Form of Composition: strophic
Instrumentation: piano and voice

Title: Flow Gently Sweet Afton. A Favorite Ballad.
Composer, Lyricist, Arranger: Set to Music & Arranged for the Guitar by Saml. Carusi.
Publication: Louisville: Peters, Webb & Co., 1840.
Form of Composition: strophic
Instrumentation: guitar and voice

~Masato