Hi Sharon,
please check on;
http://www.jewishgen.org/databases/eidb/ellis.html
manifest pages 640 & 641 for;
Sitarz,Emilia Kophi (Nysko), Poland 1921 14
If Emilia and Emelia from your post is thie same person, probably your grandfather Jozef Sitarz was from city Rudnik or village Kopki [SE from Rudnik].
See map for city Rudnik and village Kopki;
http://www.pilot.pl/index.php3?z_city_id=18290&lang=pl
This region was and is .. famous in Europe for wicker products, see one from websites;
http://www.olko.pl/en/oferta.html

By 2002 phone book I found in Rudnik;

Krystyna Sitarz
ul. J. Kilinskiego
37-420 Rudnik
woj. podkarpackie
Poland

Send air mail letter in English and explain, that you are looking for Sitarz's from Rudnik or Kopki.
Probably after 4-6 weeks you will have reply from Poland, probably in Polish.

Cordially,
Wladyslaw