"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MMC1-XKK : accessed 19 March 2016), Morton I Strauss in household of Isaac Strauss, Precinct C Cleveland City Ward 13, Cuyahoga, Ohio, United States; citing sheet 16A, family 290, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,241,253.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MLDR-TR7 : accessed 19 March 2016), Mortimer I Strauss in household of Sarah Strauss, Cleveland Ward 14, Cuyahoga, Ohio, United States; citing enumeration district (ED) ED 219, sheet 7B, NARA microfilm publication T624 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,375,183.