| NI 1738 | The Prima Voce Treasury of Opera, Volume 2 |
| NI 1742 | The Prima Voce Treasury of Opera, Volume 1 |
| NI 7050/1 | The Golden Age of Singing, Volume 1, 1900 - 1910 |
| NI 7052/3 | The Golden Age of Singing, Volume 2, 1910 - 1920 |
| NI 7054/5 | The Golden Age of Singing, Volume 3, 1920 - 1930 |
| NI 7056/7 | The Golden Age of Singing, Volume 4, 1930 - 1950 |
| NI 7801 | Great Singers, Volume 1 (1909 - 1938) |
| NI 7802 | Divas, Volume 1 (1906 - 1935) |
| NI 7803 | Enrico Caruso, Opera Volume 1 |
| NI 7804 | Giovanni Martinelli |
| NI 7805 | Rosa Ponselle |
| NI 7806 | Amelita Galli-Curci |
| NI 7807 | Beniamino Gigli, Volume 1 |
| NI 7808 | Luisa Tetrazzinni |
| NI 7809 | Enrico Caruso, in Song |
| NI 7810 | Titta Ruffo |
| NI 7811 | Ernestine Schumann-Heink |
| NI 7812 | Great Singers, Volume 2 (1903 - 1939) |
| NI 7813 | Tito Schipa |
| NI 7814 | Claudia Muzio |
| NI 7815 | Giuseppe de Luca |
| NI 7816 | Lauritz Melchior |
| NI 7817 | Beniamino Gigli, Volume 2 (1925 - 1940) |
| NI 7818 | Divas, Volume 2 (1909 - 1940) |
| NI 7819 | Royal Opera House Covent Garden |
| NI 7820 | John McCormack |
| NI 7821 | Eidé Norena |
| NI 7823/24 | Feodor Chaliapin |
| NI 7825 | Lawrence Tibbett |
| NI 7826 | Giovanni Martinelli, Volume 2 (1913 - 1923) |
| NI 7827/28 | Die Zauberflöte, Mozart, Berlin 1937 |
| NI 7829 | Louise, Gustave Charpentier, Paris 1935 |
| NI 7830 | Richard Tauber |
| NI 7831 | Mattia Battistini |
| NI 7832 | Maria Ivogun |
| NI 7833 | Lotte Schöne and Richard Tauber, in Operetta |
| NI 7834 | Enrico Caruso, in Ensemble |
| NI 7835 | Jussi Björling, The First Ten Years |
| NI 7836/37 | Conchita Supervia |
| NI 7838 | John Charles Thomas, An American Classic |
| NI 7839 | Prima Voce Party |
| NI 7840/41 | The Era of Adelina Patti |
| NI 7842 | Jussi Björling, Volume 2 |
| NI 7843/44 | Cavalleria Rusticana, Mascagni, Milan 1940, Pagliacci, Leoncavallo, Milan 1934 |
| NI 7845 | Giacomo Lauri-Volpi |
| NI 7846 | Rosa Ponselle, Volume 2 |
| NI 7847 | Kirsten Flagstad |
| NI 7848 | Great Singers at the Berlin State Opera |
| NI 7849 | Frieda Hempel |
| NI 7850 | Antonio Cortis |
| NI 7851 | Legendary Voices |
| NI 7852 | Amelita Galli-Curci, Volume 2 |
| NI 7853 | Giacomo Lauri-Volpi, sings Verdi |
| NI 7854 | John McCormack, in Song |
| NI 7855 | Great Singers in New York, The Age of Caruso |
| NI 7856 | Legendary Tenors |
| NI 7857 | Geraldine Farrar, in Italian Opera |
| NI 7858 | Great Singers at La Scala |
| NI 7859 | Enrico Caruso, Geraldine Farrar and Marcel Journet, Highlights from Faust and French Opera |
| NI 7860 | Emma Eames & Pol Plançon |
| NI 7861 | The Spirit of Christmas Past |
| NI 7862/63 | La Bohème, Puccini, Milan 1938 |
| NI 7864 | More Legendary Voices |
| NI 7865 | Great Singers at the Mariinsky Theatre |
| NI 7866 | Enrico Caruso, in Opera, Volume 2 |
| NI 7867 | Legendary Baritones |
| NI 7868 | John McCormack & Fritz Kreisler, in Recital |
| NI 7869 | Great Singers at the Gran Teatro del Liceo |
| NI 7870 | Tito Schipa, in Song |
| NI 7871 | Kirsten Flagstad, in Song |
| NI 7872 | Geraldine Farrar, in French Opera |
| NI 7873 | Lotte Lehmann, in Opera, Volume 1 |
| NI 7874 | Beniamino Gigli, in Song |
| NI 7875 | Ezio Pinza |
| NI 7876 | Great Singers in Moscow |
| NI 7877 | Antonina Nezhdanova |
| NI 7878 | Rosa Ponselle, Volume 3 |
| NI 7879 | Jussi Björling, in Song |
| NI 7880 | Vilhelm Herold |
| NI 7881 | Lawrence Tibbett, From Broadway to Hollywood |
| NI 7882 | Marian Anderson |
| NI 7883 | Heinrich Schlusnus, Schubert Lieder |
| NI 7884 | Enrico Caruso, in Song, Volume 2 |
| NI 7885/86 | Alexander Kipnis, Opera and Lieder |
| NI 7887 | Tito Schipa, in Neapolitan Song |
| NI 7888 | Richard Crooks |
| NI 7889 | Miguel Fleta |
| NI 7890 | Nellie Melba |
| NI 7891 | Luisa Tetrazzini, Volume 2 |
| NI 7892/93 | Great Singers in Donizetti |
| NI 7894 | Marcel Journet (1867 - 1933) |
| NI 7895 | Marian Anderson, Volume 2 |
| NI 7896 | Carlos Gardel (1890 - 1935), The King of Tango, Volume 1 |
| NI 7897 | Pasquale Amato (1878 - 1942) |
| NI 7898 | Sigrid Onegin (1889-1943), Volume 1 |
| NI 7899 | Helge Roswaenge (1897 - 1972) |
| NI 7900 | Caruso - The Early Recordings |
| NI 7901 | Marcella Sembrich (1858-1935) |
| NI 7902 | Carlos Gardel, The King of Tango, Volume 2 |
| NI 7903 | Elisabeth Rethberg (1894-1976) |
| NI 7904 | Alma Gluck |
| NI 7905 | Riccardo Stracciari (1875-1955) |
| NI 7906 | Legendary Cantors |
| NI 7907 | Heinrich Schlusnus in Opera |
| NI 7908 | Maria Barrientos (1884 - 1946) |
| NI 7909 | Leo Slezak (1873 - 1946) |
| NI 7910 | Emmy Destinn (1878 - 1930) |
| NI 7911 | Fernando De Lucia (1860 - 1925) |
| NI 7912 | Dame Clara Butt (1872 - 1936) |
| NI 7913 | Björling, Caruso , Gigli - Three Legendary Tenors in Opera and Song |
| NI 7914 | Lev Sibiryakov (1869 - 1942), Recordings from 1907 to 1913 |
| NI 7915/6 | Treasures of the St. Petersburg State Museum |
| NI 7917 | Vladimir Kastorsky (1871 - 1948) |
| NI 7918 | Mafalda Favero (1903 - 1981) |
| NI 7919/20 | Gerhard Hüsch (1901-1984) |
| NI 7921 | Lilli Lehmann (1848-1929) |
| NI 7922/3 | Emilio de Gogorza (1872 -1935) |
| NI 7924/5 | Enrico Caruso (1873 - 1921) in Opera Volume 3 |
| NI 7926 | César Vezzani (1888 - 1951) |
| NI 7927/8 | Enrico Caruso (1873 - 1921) in Song Volume 3 |
| NI 7929/30 | Alessandro Bonci (1870 - 1940) |
| NI 7931 | John Charles Thomas (1891 - 1960) in Opera and Song |
| NI 7932/3 | Lucrezia Bori (1887 - 1960) in Opera and Song |
| NI 7934 | Herbert Ernst Groh (1905 - 1982) in Opera |
| NI 7935/6 | Nina Koshetz (1891 - 1965) |
| NI 7937 | Igor Gorin (1904 - 1982) |
| NI 7938 | Charles Kullman (1903 - 1983) |
| NI 7939/40 | Leonard Warren (1911 - 1960) |
| NI 7941 | Zinka Milanov (1906-89) sings Verdi Arias |
| NI 7942 | Cesare Siepi (b. 1923) |
| NI 7946 | Tito Gobbi (1913 - 84) |
| NI 7947 | Victoria de Los Angeles (1923 - 2005) |
| NI 7948 | Zinka Milanov (1906 - 1989) In Recital |
| NI 7949 | Rolando Panerai (b. 1924) |
| NI 7950 | Alexander Kipnis (1891 - 1978) |