(Austrian Freemasonry – the Great Orient of Austria)
- Freemasons/Federalists network: Jászi, Seton-Watson, Tomáš Garrigue Masaryk and Edvard Beneš [1919-19??]
Bécsi Magyar Újság [1921-1923]
Workers Educational Association
Private Seminar [1924-?]
- Karl Popper, Felix Schafer.