Re: John Petko, Illinois 1912
Up to 1918 the records would say Hungary or Austria.
After the fall of this empire, several new countries were formed and one was Czechoslovakia, which in 1993 separated into Czech Republic and Slovak Republic.
An ALL site for research in Slovakia:
SK's phone book:www.zoznamst.skis listing PETKO.
PETYKO is Hungarian spelling for PET^KO.