"United States Census, 1900," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M9LV-MPG : accessed 13 Feb 2014), Jessie J Hockstra in household of Tunis Hockstra, Garfield & Plato Townships, Sioux, Iowa, United States; citing sheet , family 81, NARA microfilm publication T623, FHL microfilm 1240459.