The list included the "elite of Polish scholarship", signatories such as Tadeusz Kotarbiński, sociologists Józef Chałasiński, Stanisław and Maria Ossowska and Jan Stanisław Bystroń, biologists Stanisław Kulczyński and Jan Dembowski, psychologist Władysław Witwicki, physicist Konstanty Zakrzewski, and historians Seweryn Wysłouch, Tadeusz Manteuffel and Natalia Gąsiorowska.
Konstanty Ostrogski | Konstanty Ildefons Gałczyński | Konstanty Zakrzewski | Jim Konstanty | Jan Dołęga-Zakrzewski | Jan Andrzej Zakrzewski | Konstanty Wasyl Ostrogski | Konstanty Jodko-Narkiewicz | Berenika Zakrzewski |