"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MWSW-HQN : 19 February 2021), Lucina Conrad in household of Balser Conrad, Richfield, Genesee, Michigan, United States; citing enumeration district ED 84, sheet 372B, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,254,579.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MSMW-FQV : accessed 25 May 2021), Marry L Conrad in household of Balthasar Conrad, Richfield township, Genesee, Michigan, United States; citing enumeration district (ED) 26, sheet 11A, family 255, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,711.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MLPR-652 : accessed 25 May 2021), Mary L Conrad, Richfield, Genesee, Michigan, United States; citing enumeration district (ED) ED 47, sheet 2A, family 35, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 642; FHL microfilm 1,374,655.
Find a Grave, database and images (accessed 24 May 2021), memorial page for Mary Lucinda Tucker Conrad (20 Nov 1847–2 Mar 1915), Find A Grave: Memorial #43672903, citing Saint John Catholic Cemetery, Davison, Genesee County, Michigan, USA ; Maintained by Shirley Hoard (contributor 46857773) .