"United States Census, 1900," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MMBZ-BKG : accessed 03 Nov 2014), Eunice Nussbaum in household of Nicholas Nussbaum, Gilboa Township, Benton, Indiana, United States; citing sheet 3A, family 45, NARA microfilm publication T623, National Archives and Records Administration, Washington, D.C.; FHL microfilm 1240360.
"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/V1T6-Y88 : accessed 03 Nov 2014), Eunice Knochel in household of Gustave Knochel, Carpenter Township, Jasper, Indiana, United States; citing enumeration district (ED) 37-3, sheet 1A, family 8, NARA digital publication of T627, roll 1057, NARA digital publication of T627, National Archives and Records Administration, Washington, D.C.
"Indiana, Marriages, 1811-1959," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/XXVJ-6WC : accessed 03 Nov 2014), Gustav A Knochel and Eunice Nussbaum, 29 Dec 1909; citing Fowler, Benton, Indiana, county clerk offices, Indiana; FHL microfilm 001955068.