↑ "United States Census, 1930," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:XQTV-557 : accessed 30 March 2022), Josephine Marfia in household of Onofrio Marfia, Fennville, Allegan, Michigan, United States; citing enumeration district (ED) ED 8, sheet 4A, line 28, family 85, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 972; FHL microfilm 2,340,707.
↑ 2.02.1 "United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JG25-56G : 12 January 2021), Josephine M Stuenkel, 07 Oct 2007; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
"United States Census, 1940," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:K42S-D8X : 10 January 2021), Josephine Marfia in household of Onofiro Marfia, Fennville, Allegan, Michigan, United States; citing enumeration district (ED) 3-8, sheet 2A, line 4, family 29, 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 1721.
"Michigan Obituaries, 1820-2006," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QVP1-N9B1 : 1 April 2020), Josephine Marfia in entry for Carl W Stuenkel, 1990; citing Allegan, , Michigan, United States, Obituary, Grand Rapids Public Library, Michigan; FHL microfilm 7,598,116.