"District of Columbia Marriages, 1811-1950," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VNT4-N6S : 27 September 2017), Ralph Johnson Bunche and Ruth Ethel Harris, 23 Jun 1930; citing p. 367, Records Office, Washington D.C.; FHL microfilm 2,399,055.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K73M-YFM : 15 March 2018), Ruth Bunch in household of Ralph J Bunch, Tract 34, District of Columbia, Police Precinct 10, District of Columbia, District of Columbia, United States; citing enumeration district (ED) 1-423, sheet 5A, line 9, family 58, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 567.
Find A Grave, database and images (https://www.findagrave.com : accessed 9 February 2018), memorial page for Ruth Harris Bunche (24 Jul 1906–7 Oct 1988), Find A Grave: Memorial #171251902, citing Woodlawn Cemetery, Bronx, Bronx County, New York, USA ; Maintained by Neil Funkhouser (contributor 46781068).