He founded a free school of music for the poor, the Conservatoire Populaire de Mimi Pinson, wrote dramatic and choral works, and composed both the music and libretti for the operas Louise and Julien. ALS in French, signed “G. Charpentier,” on self-contained mail page, 5 x 7, no date. Letter to a friend reads in small part: “Casadesus told me he asked you to make arrangement of opera Louise.” In fine condition, with adhesive toning to edges, and light show-through from address panel and cancellations on reverse. RRAuction COA.