Name Anna Bartkoski (Sinkoska)
Notes Phyllis Long added this information from a death certificate:
Annie is indexed as Annie Barkoski (Sinkoswka) on the Missouri Archives web site. She was a daughter of John Sinkoswka and Sofa Toyroski?, both born Poland. S. "Stanley" L. Bartkoski of Pierce City, MO was the informant. She was the wife of John Bartkoski, born 1844.

1900 Census Missouri; Barry; Capps Creek; District 3
John Bartkoski, head, born Dec 1844 Poland, age 55, married for 28 years, immigrated to US in 1884, parents born Poland
Annie, wife, born Aug. 1843 Poland, mother of 2 children, 1 living, immigrated to US in 1884, parents born Poland
Stanney, son, born Apr. 1874 Poland, age 26, married 3 years, immigrated to US in 1884
Josephine, daughter-in-law, born Mar 1879 MO, age 21, mother of 1 child living, parents born Germany
Sophie, granddaughter, born Mar. 1899 MO, age 1
Michael, father, born 1823 Poland, age 77, widowed, immigrated to US in 1882, parents born Poland
Annie Bartkoski, adopted daughter, born 1891 NY, age 9, parents born NY

Obit: Pierce City Leader-Journal, June 21, 1928
Mrs. Anna Bartkoski, 89 years old, died at the home of her son, Stanley Bartkoski, Saturday afternoon, June 16, at 1:30 o'clock. Her death was due to infirmities of her advanced age. Funeral services were held from St. peter's & Paul's church at Bricefield Monday morning (June 18)at ten o'clock, conducted by Rev. Father Julian. Interment was in the Bricefield cemetery. Mrs. Bartkoski is survived by one son, Stanley Bartkoski.
Resource Census, Death Certificate, Obit
Researcher Phyllis Long