Looking for other researchers.
My grandmother, Margarethe Schaak,born 1900, daughter of Anna Schaak,(Anna lived Linden,Ewaldstr.) married unknown Hatterscheidt abt.1920, last German residence Linden Dahlhausen, came to USA with daughter Hedwig age 6 and son Karl age 3,unknown if widow or divorced, arriving NY December 3, 1926. Finally destination Chicago.Illinois, remarried to Paul Hafner.Children's names Americanized.
Any help in finding where to search for records greatly appreciated.I am at a loss to where to even begin.