"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MDZH-NM6 : 9 November 2014), Bethena Mcknight in household of William Mcknight, Allen, Gentry, Missouri, United States; citing family 519, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).