"Wisconsin Births and Christenings, 1826-1926," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/XRVL-SVZ : 12 December 2014), Peter John Kremer... in entry for Lucy Frances Kremer..., 30 May 1899; citing Oconto, Wisconsin, reference 1015135 file 00416; FHL microfilm 1,305,135.
"United States Public Records, 1970-2009," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QJJK-7TZN : 16 May 2014), Lucy F Foster, Residence, Portland, Oregon, United States; a third party aggregator of publicly available information.
"United States, GenealogyBank Obituaries, 1980-2014," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QKPB-GZV3 : 25 October 2016), Marion Granstrom in entry for Mrs Lucy F Foster, Portland, Oregon, United States, 21 Feb 1999; from "Recent Newspaper Obituaries (1977 - Today)," database, GenealogyBank.com (http://www.genealogybank.com : 2014); citing Oregonian, The, born-digital text.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:V3K6-J3X : 20 May 2014), Lucy F Foster, 10 Feb 1999; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
It may be possible to confirm family relationships with Lucy by comparing test results with other carriers of her mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Lucy: