Looking for Czech, Slovakian, Rumanien and Swiss football experts

[hungarian_stats]

I am looking for information on Hungarian players who played in the Chechoslovakian, Rumanien or Swiss leagues between the wars. Please let me know if you know someone or know of publications that deal with pre 1945 soccer stats from the above mentioned countries.

I would be also interested in the history of clubs that for a brief period played in Hungary during WWII. E.g. Kassai AC, Fuleki TC, Ungvari Rusj SK, Losonci AFC, Ungvari AC etc.