- Libro electrónicoThe Standard Oratorios Their Stories, Their Music, And Their ComposersGeorge P. (George Putnam) Upton
- Libro electrónicoThe Standard Operas (12th edition) Their Plots, Their Music, and Their ComposersGeorge P. (George Putnam) Upton
- Libro electrónicoThe Standard Cantatas Their Stories, Their Music, and Their ComposersGeorge P. (George Putnam) Upton
- Libro electrónicoThe Standard Light Operas Their Plots and Their MusicGeorge P. (George Putnam) Upton
- Libro electrónicoLife of Wagner Biographies of MusiciansGeorge P. (George Putnam) Upton
- Libro electrónicoMemoriesF. Max (Friedrich Max) Müller
- Libro electrónicoLetters of Peregrine PickleGeorge P. (George Putnam) Upton
- Libro electrónicoLife of Wagner Biographies of MusiciansGeorge P. (George Putnam) Upton