Linked from
The 39 pages that link to Libretto, each with the reason it gives.
Luigi IllicaNarrower topic: Illica’s principal contribution to opera was writing librettos.
Giuseppe GiacosaNarrower topic: Giacosa’s literary work for Puccini took the form of librettos.
Temistocle SoleraNarrower topic: Solera wrote the words that Verdi shaped into operatic music.
Richard GenéeNarrower topic: Genée’s librettos provided plots and dialogue for composers’ music.