Laura Don's son wrote a libretto for an operetta composed by which conductor?
Laura Don:  She wrote the play "A Daughter of the Nile", that found its greater success after her death, and was the mother of the writer Glen MacDonough ("Babes in Toyland"). Babes in Toyland (operetta): Babes in Toyland is an operetta composed by Victor Herbert with a libretto by Glen MacDonough (1870–1924), which wove together various characters from Mother Goose nursery rhymes into a Christmas-themed musical extravaganza.
Victor Herbert