Genealogy / Bozena, Stefan, Agnieszka, Magdalena Nowak - Adopted in 1989 - looking for family members [5]

Hello, this might be strange but my sister and I were adopted in 1989 by two Americans (no complains) however it would be nice to get in touch with some original family members. I was 12 at the time- Agnieszka and my sister 5- Madgalena. Our original name was Nowak. Our birth parents were Bozena and Stefan Nowak. Mother died in 1989 and that is mostly why we were adopted. Any information would be greatly appreciated.