"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MSQY-KKS : accessed 24 July 2021), Ruth Dunbar in household of William S Dunbar, Precinct 54 Lake town Chicago city Ward 30, Cook, Illinois, United States; citing enumeration district (ED) 944, sheet 12A, family 207, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,283.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M2MB-J9V : accessed 24 July 2021), Ruth Dunbar in household of William S Dunbar, Rosenburg, Fort Bend, Texas, United States; citing enumeration district (ED) ED 17, sheet 4B, family 86, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1553; FHL microfilm 1,375,566.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XS54-QXV : accessed 24 July 2021), Ruth Donald in household of Adam Donald, Chicago (Districts 1501-1750), Cook, Illinois, United States; citing enumeration district (ED) ED 1661, sheet 1A, line 12, family 5, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 486; FHL microfilm 2,340,221.
"Texas, Matagorda County, School Census Records, 1923-1946," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q2Q1-SX7V : accessed 24 July 2021), Ruth Donald in entry for Phyllis Donald, 1941; citing School enrollment, State Board of Education. Matagorda County Judge, Bay City.
"Virginia, Marriage Certificates, 1936-1988," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QV17-4DT7 : 20 February 2021), Ruth Dunbar in entry for Gregory Edgar Doyle and Phyllis Donald Chestnutt, 06 Jan 1977; from "Virginia, Marriage Records, 1700-1850," database and images, Ancestry (http://www.ancestry.com : 2012); citing Fairfax, , Virginia, United States, certificate 77-001658, Virginia Department of Health, Richmond.
"Virginia, Death Certificates, 1912-1987," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QVY5-CNW2 : 16 August 2019), Ruth Dunbar Groesbeck, 05 Jul 1985; from "Virginia, Marriage Records, 1700-1850," database and images, Ancestry (http://www.ancestry.com : 2012); citing Alexandria, , Virginia, United States, entry #, Virginia Department of Health, Richmond.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JYTF-XJ9 : 10 January 2021), Ruth Groesbeck, Jul 1985; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
"United States, GenealogyBank Historical Newspaper Obituaries, 1815-2011", database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QPBJ-K9PT : 18 July 2020), Mrs Ruth Dunbar Groesbeck in entry for Mr Bertram Groesbeck, 1948.