"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MFMK-JBM : accessed 5 October 2019), Saul Berger in household of Soloman Berger, Boston Ward 16, Suffolk, Massachusetts, United States; citing ED 423, sheet 18B, line 75, family 402, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 733; FHL microfilm 1,820,733.