August Plappart von Leenheer (1836-1907)
August Plappart von Leenheer (1836-1907). Profession: Court intendant Vienna State Opera Relation to Mahler: Worked with Gustav Mahler. Correspondence with Mahler: ...
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Ernst von Possart (1841-1921)
Ernst von Possart (1841-1921) Profession: Intendant Munich Hoftheater Residences:  Relation to Mahler:  Correspondence with Mahler:  Born: 11-05-1841 Berlin Died: 08-04-1921 ...
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