Thank you for the reply. Mine will undoubtedly be a difficult search since my great-grandparents probably never left Poland, and the list I have of my grandmother's siblings are "Americanized" names. Since all of my relatives on mom's side are deceased, I have no way of checking any further for accuracy.
If I run across any Garbacz family members that might be from your line, I'll post the info. Thank you again!