"Indiana Marriages, 1811-2007," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:4T5R-SJT2 : 16 January 2021), Ronald Keffer, 29 May 1930; citing Madison, Montour, Pennsylvania, United States, Marriage, Indiana Commission on Public Records, Indianapolis; FHL microfilm 007747376.
"United States Census, 1940," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:V1Y4-7V7 : 5 January 2021), Ronald W Keffer, Stony Creek Township, Madison, Indiana, United States; citing enumeration district (ED) 48-75, sheet 13B, line 73, family 285, 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 1074.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JRVL-2YW : 9 January 2021), Ronald W Keffer, 04 Mar 1998; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).