Genealogy / Wilkowiecki, Simmons - Looking for family [2]

Wondering if anyone can help us. My husband is searching for his Birth parents. He knows that his mom was Alicia Wilkowiecki and was not married, his dad was William Simmons both from Poland. She was 19 in 1965 and adopted my husband to his current family when she was in Alberta Canada. It seems she may have returned to Poland after the adoption.

Any help would be great.
Thank You in advance