"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M2M1-BPF : accessed 11 December 2019), Clide Mckinley in household of William W Mckinley, Justice Precinct 1, Frio, Texas, United States; citing enumeration district (ED) ED 47, sheet 10A, family 109, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1553; FHL microfilm 1,375,566.