Researching John Johnson Born Abt 1872 Died 1920 IN Oteneagen MN

I am looking for info on JOHN JOHNSON born 1872, died 1920. He married HANNA HIETALO who was born 1879. They have a son ALBERT EMMANUEL JOHNSON, born 4-17-1921, died 2-1986. He was my grandfather. I need more information on ALBERT AND JOHN'S descendants.