"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MJTQ-3MW : 14 December 2015), Arnold Auerbach in household of Herman Auerbach, Brooklyn Assembly District 22, Kings, New York, United States; citing sheet 17B, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,821,180.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K733-TQN : accessed 2 October 2016), Aronald J Auerbach, Tract 90, District of Columbia, Police Precinct 12, District of Columbia, District of Columbia, United States; citing enumeration district (ED) 1-472, sheet 1A, family , 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 569
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JB8S-L2D : 20 May 2014), Arnold J Auerbach, 28 Oct 2006; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).