"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MGSD-87H : accessed 17 October 2020), Walter J Keener, Grady, Curry, New Mexico, United States; citing enumeration district (ED) ED 60, sheet 4A, family 101, NARA microfilm publication T624
"United States World War I Draft Registration Cards, 1917-1918", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KXTZ-JMP : 6 March 2020), Walter James Keener, 1917-1918.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XCVV-2K5 : accessed 17 October 2020), Walter J Keener in household of Agustus F Lueninghoener, Los Angeles (Districts 0251-0500), Los Angeles, California, United States; citing enumeration district (ED) ED 356, sheet 2A, line 35, family 72, NARA microfilm publication T626