1919 - 1927

PANHELLENION was an American record label, started in 1919, and which issued numerous 78rpm records featuring ethnic Greek music.
Founded by Κα Κούλα (Kiria Koula, real name: Coula Giortzi-Andonopoulou) who had become the prominent Greek recording artist in America while recording for Columbia Records.

It was successful enough to open a branch office in Chicago. The label folded in 1927 with the death of Koulas' husband.

Source: Wikipedia