On the 1920 Census, Frank was living with his son Arthur on a farm. On the 1930 census, Frank was still farming with his son Arthur. He was 71 years old.
1920 Census. Mary was living with her daughter and son-in-law. Believe her and Frank divorced. Her occupation is a nurse. On the 1930 census, could not find Mary. She was no longer living with her daughter, Nora. Nora's son was living right by them with his wife.
On 1920 census, Arthur living with his father and farming. On 1930 census, Arthur still living with his father and farming. He was 36 years old.