Naturalization papers should tell where and when your family entered
USA. I found my Grandfather's naturalization papers showed he entered
through Boston 1904. The ship's name was incorrect as he had been on a
sister ship, the Ivernia. His wife and family entered through Ellis
Island the following year. It took two years to find the later records
and his wife's name was mispelled.
Don't give up!
researching: COHEN-Plock, Poland, Manchester, Eng, USA
GOLDBERG- Plock and Zdunska Wola Poland, Eng.
BLUMSTEIN- Piotrokow, Poland, England, USA