Genealogy /
Kosakiewicz family / Sochowski [29]
You can start off by checking out ancestry.com below is the results for a search on "Kosakiewicz".
Census & Voter Lists 19
13 1920 United States Federal Census
6 1930 United States Federal Census
Birth, Marriage & Death 8
2 California Death Index, 1940-1997
2 Social Security Death Index
2 United States Obituary Collection
1 Florida Marriage Collection, 1822-1875 and 1927-2001
1 Wisconsin Births, 1820-1907
Military 3
1 Germany: Flossenbürg Concentration Camp Records, 1938-1945
1 France: Natzweiler-Struthof Concentration Camp Record Book, 1940-1945
1 World War I Draft Registration Cards, 1917-1918
Immigration & Emigration 77
36 New York Passenger Lists, 1820-1957
26 Hamburg Passenger Lists, 1850-1934 (in German)
4 Philadelphia Passenger Lists, 1800-1945
3 Canadian Passenger Lists, 1865-1935
2 Minnesota Naturalization Records Index, 1854-1957
» View all 77 results
Directories & Member Lists 85
64 U.S. Public Records Index
16 U.S. Phone and Address Directories, 1993-2002
3 Canadian Phone and Address Directories, 1995-2002
1 British Phone Books, 1880-1984
1 Poland: Nowogródek Province Business Directory, 1929
You need to put your hands on as much documentation as you can regarding when your Polish ancestors arrived in the US, their correct names at that time (especially if they americanised their names), what town or village they were from, etc. This will help you narrow down your search.