I know that my great grandparents, Karl Eric Nilsson and Anna Mathilda Johansdotter/Nilsson and their son, Karl Hjalmer moved from Chicago, Illinois between 1902-1906 to Freeport, Illinois. I need to find them in Freeport. I've written to the courthouse but they tell me they have no time to assist me. Can anyone tell me the best way to find them?
Thank you very much..