Long, Marguerite. (1874–1966) Five Autograph Letters SignedFive ALS of the legendary French pianist and teacher, friend and champion of both Debussy and Ravel. In French. In fine condition. 1. To "Monsieur Bottenheim" in Amsterdam. 3 pp., air mail letter (address and postscript on fourth page). Postmarked Paris, September 20, 1922. Promotional stamp, "Utilisez la poste arienne Se renseigner dans les bureaux de poste." Long asks her correspondent to reserve a room at the Htel des Pays Bas, where she had stayed