"California Death Index, 1940-1997," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VG5V-F4G : 26 November 2014), Mabel Cohen Lansing, 26 Oct 1945; Department of Public Health Services, Sacramento.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M9PM-RVG : accessed 26 November 2020), Mabel C Lansing in household of Emilior G Chone, Alameda Township, Precinct 1 Alameda city, Alameda, California, United States; citing enumeration district (ED) 309, sheet 12B, family 270, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,081.
"United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:M6GG-215 : 11 November 2020), Mabel Cohen in household of Alfred A. Cohen, Alameda, California, United States; citing enumeration district ED 31, sheet 659B, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,254,062.
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