"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M6P2-C7L : 29 July 2017), Mary L Quigley in household of John Quigley, Scott Valley, Siskiyou, California, United States; citing enumeration district ED 104, sheet 221C, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0083; FHL microfilm 1,254,083.
"United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MNXS-GQB : 12 April 2016), Mary L Quigley in household of John Quigley, California, United States; citing p. 16, family 174, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 545,588.