looking for 2 adopted siblings from Chicago but don't know how to start..Help

Yes it does. My mothers Maiden name is Kay Arlene Otten she was 25 so thats puts her YOB around 1935 in Harvey, IL. I was born 12/15/1960 as Anthony John Sorbie This is my first contact and it would be nice if this worked out but it can't be this easy. But heres hoping