1930 US Census: Name: Mary H Smith; Event Place: Lawrence, Mercer, New Jersey, United States; Gender: Female; Age: 17; Marital Status: Single; Race: White; Relationship to Head of Household: Daughter; Birth Year (Estimated): 1913; Birthplace: New Jersey; Father's Birthplace: New Jersey; Mother's Birthplace: England
Joseph I Smith Head M 38 New Jersey
Sarah Smith Wife F 49 England
Mary H Smith Daughter F 17 New Jersey
Joseph Smith Son M 16 New Jersey
Sarah Smith Daughter F 13 New Jersey
June Smith Granddaughter F 3 New Jersey
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X4X6-WW2 : accessed 11 October 2019), Mary H Smith in household of Joseph I Smith, Lawrence, Mercer, New Jersey, United States; citing enumeration district (ED) ED 110, sheet 8A, line 3, family 172, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1362; FHL microfilm 2,341,097.