"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MZ66-HTB : accessed 19 July 2015), Mary Nelson in household of Henry Nelson, New York, New York, New York, United States; citing enumeration district 312, sheet 101C, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0881; FHL microfilm 1,254,881.
"New York, New York City Marriage Records, 1829-1940," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/24CR-YDH : accessed 19 July 2015), Mary Flynn in entry for James Cagney and Carrie Nelson, 22 Dec 1897; citing Marriage, Manhattan, New York, New York, United States, New York City Municipal Archives, New York; FHL microfilm 1,503,722.
"California Death Index, 1940-1997," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/VPQX-W6P : accessed 19 July 2015), Flynn in entry for Caroline Elizabeth Cagney, 07 Oct 1945; Department of Public Health Services, Sacramento.
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