US Census 1930:
https://www.familysearch.org/ark:/61903/1:1:XS1B-Y1YName: Nels Olson
Event Type: Census
Event Date: 1930
Event Place: Moline, Rock Island, Illinois, United States
Gender: Male
Age: 45
Marital Status: Married
Race: White
Race: White
Relationship to Head of Household: Head
Birth Year (Estimated): 1885
Birthplace: Sweden
Immigration Year: 1903
Father's Birthplace: Sweden
Mother's Birthplace: Sweden
Sheet Letter: B
Sheet Number: 8
Household Role Sex Age Birthplace
Nels Olson Head Male 45 Sweden
Alma Olson Wife Female 42 Sweden
Doris Olson Daughter Female 9 Illinois
Mathilda Johnson Mother-in-law Female 79 Sweden
------------------------------------------------------------------------US Census 1940:
https://www.familysearch.org/ark:/61903/1:1:KWZ3-KP7Name: Nels Olson
Event Type: Census
Event Date: 1940
Event Place: Ward 5, Moline, Moline Township, Rock Island, Illinois, United States
Gender: Male
Age: 55
Marital Status: Married
Race: White
Relationship to Head of Household: Head
Birthplace: Sweden
Birth Year (Estimated): 1885
Last Place of Residence: Same House
Household Role Sex Age Birthplace
Nels Olson Head Male 55 Sweden
Alma Olson Wife Female 53 Sweden