"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MZ3T-SV6 : 14 December 2015), Edward Szyszko in household of Joseph Szyszko, Grand Rapids Ward 1, Kent, Michigan, United States; citing sheet 8B, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,820,777.
"Michigan Marriages, 1868-1925," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:N3LH-9JT : 4 December 2014), Joseph Sizko and Amelia Dajnowricz, 17 Nov 1913; citing Grand Rapids, Kent, Michigan, v 3 p 133 rn 12715, Department of Vital Records, Lansing; FHL microfilm 2,342,701.