Elmo was born in 1919. He was the son of William Smith. He passed away in 2002.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M8PL-1G7 : accessed 26 June 2019), Elmo Smith in household of W E Smith, Salem, Utah, Utah, United States; citing ED 214, sheet 8B, line 57, family 158, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 1868; FHL microfilm 1,821,868.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:V9P5-CMK : 20 May 2014), Elmo B Smith, 15 May 2002; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
It may be possible to confirm family relationships with Elmo by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Elmo: