https://www.themorgan.org/music-manuscripts-and-printed-music/232107
[Flonzaley Quartet. Signatures (dated April 1929) of Adolfo Betti, Alfred Pochon, Iwan...
, [Flonzaley Quartet. Signatures (dated April 1929) of Adolfo Betti, Alfred Pochon, Iwan d'Archambeau, and Nicolas Moldavan]., ,
flonzaley quartet