"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VB9D-TH1 : 6 March 2020), Abraham Akaka in household of Kahikina Akaka, Tract 16, Honolulu Judicial District, Representative District 4, Honolulu, Hawaii Territory, United States; citing enumeration district (ED) 2-25, sheet 3A, line 42, family 48, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 4584.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:J56T-CMC : 23 August 2020), Abraham K Akaka, 10 Sep 1997; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).