a comic opera in two acts /
book by Harry B. Smith and Fred De Gresac ; lyrics by Robert B. Smith.Vocal score.
Herbert, V., Smith, R. B., Grésac, F. de., Smith, H. B. (Harry Bache). (1913). Sweethearts: a comic opera in two acts. New York: G. Schirmer.
Herbert, Victor, 1859-1924, Robert B Smith, Fred de Grésac, and Harry B. (Harry Bache) Smith. Sweethearts: a Comic Opera In Two Acts. New York: G. Schirmer, 1913.
Warning: These citations may not always be complete (especially for serials).