I am looking for information on my grandfather, Olaf M. Hanson. He was born at Lake Preston, South Dakota on July 24, 1890. There was carbon monoxide poisioning and his parents and siblings all passed away at the same time. He was the only survivor. He also lived in Norway,and Bossko South Dakota. He was married once before he married my grandmother Mary Creth (Rowe) Hanson. He had a son with his first wife (I don't have a name) by the name Burnell Hanson. I know his best friend was August Steppa. His parents were from Norway.
I have been on this search for about 5 years now and don't know where else to look.