1910 - The family lives in Minneapolis, Hennepin county, Minnesota 
1930 - The family lives in Workman, Aitkin county, Minnesota (Ruth works as "Teacher, con. school." 
What happens to Ruth after 1930?
↑ Source: United States Census 1910 (Enumeration District No 179, Sheet No 9A)
↑ Source: United States Census 1930 Enumeration District No 57, Sheet no 1B).
Father Victor's *Find A Grave, database and images (accessed 07 May 2019), memorial page for Victor Muller (15 Apr 1879–15 Apr 1960), Find A Grave: Memorial #94441931, citing Union Woodland Cemetery, McGregor, Aitkin County, Minnesota, USA ; Maintained by Judy Orr Hawley (contributor 47100316) Gravestone picture