"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MLWT-B19 : accessed 1 February 2020), Sylvias M Becurs in household of Mathias Becurs, Precinct 9, Cedar, Nebraska, United States; citing enumeration district (ED) ED 39, sheet 20B, family 58, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 840; FHL microfilm 1,374,853.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K4SL-P22 : 24 December 2019), Sylvia Gansle in household of Justus Gansle, Corpus Christi, Justice Precinct 1, Nueces, Texas, United States; citing enumeration district (ED) 178-31, sheet 8A, line 25, family 174, 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 4116.
Find A Grave, database and images (https://www.findagrave.com : accessed 01 February 2020), memorial page for Sylvia Mary Becker Gansle (7 Sep 1906–10 Nov 2007), Find A Grave Memorial no. 73342203, citing Seaside Memorial Park, Corpus Christi, Nueces County, Texas, USA ; Maintained by Jane Marie Morrison (contributor 46857866).