Peter Ritzema Head M 48 Holland
Hilda Ritzema Wife F 48 Holland
Wilmina Ritzema Daughter F 20 Michigan
Fred Ritzema Son M 18 Michigan
Jacob Ritzema Son M 15 Michigan
Lena Ritzema Daughter F 13 Michigan
Henretta Ritzema Daughter F 11 Michigan
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XQBL-S1V : accessed 24 June 2019), Wilmina Ritzema in household of Peter Ritzema, Grand Rapids, Kent, Michigan, United States; citing enumeration district (ED) ED 91, sheet 8B, line 91, family 145, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1003; FHL microfilm 2,340,738.