↑ "Massachusetts Marriages, 1841-1915," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q28K-48FX : 28 November 2018), David Hyman and Bessie Dreyfus, 16 Feb 1926; citing Boston, Suffolk, Massachusetts, United States, State Archives, Boston; FHL microfilm 831,849.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XQRN-3R8 : accessed 4 June 2023), David Hyman, Boston (Districts 251-500), Suffolk, Massachusetts, United States; citing enumeration district (ED) ED 474, sheet 7B, line 80, family 114, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 955; FHL microfilm 2,340,690.
"United States Census, 1940," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:K4V3-MCD : 10 January 2021), David Hyman, Boston, Suffolk, Massachusetts, United States; citing enumeration district (ED) 15-520, sheet 2A, line 18, family 21, 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 1673.