Looking for information on the following family:
1930
Gustave A Hanson, b: abt 1887 Norway (draft registration for an A Gus Hanson in Douglas lists a date of birth: 09 May 1887, naturalized citizen born in Flekkefjord, Norway)
Wife: Viola M. b: abt 1892/1894 Iowa (parents born IA, Indiana
Children:
Donovan G Hanson b: abt 1919 WY
Tonetta Hanson b: abt 1920 WY (birthdate 31 Mar 1920, according to death record, d: 23 May 2000 WY)
Dorothy Hanson b: abt 1924 WY

1920 Census shows Gustave, Viola and Donovan living in Election District 13, Niobrara, Wyoming.

Tonetta Mae Hanson married Gerald Hineman.

Any information would be appreciated: Viola's maiden name and parents, where in Iowa she is from, spouses for Donovan and/or Dorothy, parents of Gustave etc.

Thank you,
Cynthia