"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K9M5-YTR : 27 January 2020), Dolores Valderama in household of Antonio Valderama, Ward 2, Scottsbluff, Scottsbluff City, Scotts Bluff, Nebraska, United States; citing enumeration district (ED) 79-26A, sheet 7A, line 14, family 111, 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 2264.
"United States Social Security Death Index," database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:JL5N-B44 : 4 December 2020), Dolores O Balderramos, 21 Oct 1989; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
Find a Grave, database and images (https://www.findagrave.com : accessed 25 December 2020), memorial page for Dolores Balderramos (1903–1989), Find A Grave: Memorial #32296401, citing Saint Pauls Cemetery, Belle Fourche, Butte County, South Dakota, USA ; Maintained by Jon Rice (contributor 46896745) .