"United States Census, 1930," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/X4W9-FPY : accessed 25 February 2015), Bernadina E Holdgreiwe in household of George C Holdgreiwe, Cincinnati (Districts 1-250), Hamilton, Ohio, United States; citing enumeration district (ED) 0245, sheet 4B, family 83, line 57, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1815; FHL microfilm 2,341,549.