Name
- Leinsdorf, Erich, conductor, 1912-1993, http://isni.org/isni/000000...1
- Leutwiler, Toni, correspondent of Boosey and Hawkes Ltd., fl 1958-19611
- London Bach Group, 1957-19611
- Mairants, Ivor, classical and jazz guitarist, 1908-19981
- Mallorca Symphony Orchestra, fl 1956-19581
- Malmström, of Malmö; music dealers, fl 1956-19591
- Marken, Bob, Dutch composer, b 1915, http://isni.org/isni/000000...1
- Maxfield, Richard Vance, American composer, 1927-1969, http://isni.org/isni/000000...1
- Mills Music Ltd., fl 1953-19571
- Minchinton, John, conductor, fl 1940-19611
- Moeschinger, Albert, Swiss composer, 1897-19851
- Molenaar Edition, Dutch music publishers, 1933-1
- Mott, Günter, manager of Boosey and Hawkes Bonn, fl 1956-19681
- Musicians' Union, United Kingdom, 1921-1
- Mycielski, Zygmunt, Polish composer, 1907-1987, http://isni.org/isni/000000...1
- Myers, Rollo Hugh, writer on music, 1892-1985, http://viaf.org/viaf/50168361
- Müller und Schade, of Bern; Swiss music publishers, 18501
- Müller, Rudolf, of Pully, Switzerland; president of the Swiss Union of Music Dealers and Publishers, d 19571
- Philharmonia Orchestra, 1945-1
- Prokofiev, Sergei Sergeevich, composer, 1891-1953, http://isni.org/isni/000000... http://viaf.org/viaf/715790981