1930 census -- San Rafael, Marin Co., California, USA
Sigfred Olson, head, own $6950, white, male, age 31, married, first married @ 24, born Colorado, father born Sweden, mother born Sweden, superintendant gas company; Natalie B Olson, wife, white, female, age 31, married, first married @ 24, born California, father born Nebraska, mother born Iowa; Elinor R Olson, daughter, white female, age 3 4/12, single, born California, father born Colorado, mother born California; John C Olson, son, white male, age 2 7/12, single, born California, father born Colorado, mother born California; [4]
1940 census -- San Rafael, Marin Co., California, USA
Siegfried G Olsen, head, own $4200, white, male, age 41, married, 4 years college education, born Colorado, same place 1935, general foreman electrical producation; Natalie B Olsen, wife, white, female, age 41, married, 4 years college education, born California, same place 1935; Elinor R Olsen, daughter, white female, age 14, single, attended school, attended school, 8th grade education, born California, same place 1935; John C Olsen, son, white male, age 12, single, attended school, 6th grade education, born California, same place 1935; Martha B Olsen, daughter, white female, age 9, single, attended school, attended school, 3rd grade education, born California, same place 1935; [5]
↑ "California, County Marriages, 1850-1952," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/K8NQ-JGH : 28 November 2014), Sigfred Gustav Olson and Natalie Burlingame, 25 Aug 1923; citing Los Angeles, California, United States, county courthouses, California; FHL microfilm 2,074,427.
↑ "California Death Index, 1940-1997," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/VGB2-B1V : 26 November 2014), Sigfred Gustav Olson, 15 Feb 1981; Department of Public Health Services, Sacramento.
↑ "United States Census, 1930," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/XCDH-J5K : accessed 18 June 2017), Sigfred G Olson, San Rafael, Marin, California, United States; citing enumeration district (ED) ED 16, sheet 8A, line 33, family 189, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 176; FHL microfilm 2,339,911.
↑ "United States Census, 1940," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/K9WT-HFP : accessed 18 June 2017), Siegfried G Olsen, San Rafael, San Rafael Judicial Township, Marin, California, United States; citing enumeration district (ED) 21-19, sheet 12A, line 18, family 377, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 261.
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