"Minnesota, Births and Christenings, 1840-1980," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/FDQ2-8VP : accessed 27 February 2015), Robert Fockens, 20 Sep 1871; citing Winona, Winona, Minnesota, reference v A p 88; FHL microfilm 1,377,830.