"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M4ZH-546 : 12 April 2016), Margaret B Ormsby in household of J S Ormsby, Hempfield, Westmoreland, Pennsylvania, United States; citing family 3, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
"United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MN6L-XYJ : 12 April 2016), Maggie B Sanderson in household of S W Sanderson, California, United States; citing p. 52, family 398, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 545,576.
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M6PX-XC6 : 29 July 2017), Margaret Sanderson in household of S W Sanderson, San Francisco, San Francisco, California, United States; citing enumeration district ED 208, sheet 176A, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0079; FHL microfilm 1,254,079.
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