The International Bruckner Society (German Internationale Bruckner-Gesellschaft) was an organization which began its existence in 1927 in Leipzig and was officially founded in 1929 in Vienna.
Most of Bruckner's music had been published during the composer's lifetime or shortly after his death, but often in versions that incorporated numerous changes suggested by his friends and students.
The first publication was Orel's critical edition of the Ninth Symphony, published in 1934 but premiered two years earlier in 1932 in a concert by Siegmund von Hausegger conducting the Munich Philharmonic Orchestra.
The Society had officially been dissolved in 1938 immediately after the Anschluss (although publication of the complete edition continued from Leipzig).
Nowak continued as General Editor until 1989, by which time the Society had published multiple versions of the symphonies and also numerous other works by Bruckner.