"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MKW5-QTX : accessed 25 December 2022), Catherine A Burns in household of Pheobe S Burns, Denver Ward 1, Denver, Colorado, United States; citing enumeration district (ED) ED 47, sheet 5A, family 114, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 114; FHL microfilm 1,374,127.
"Texas, County Marriage Index, 1837-1977," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XLDQ-S6B : 10 March 2021), Albert W Liefgreen and Catherine A Burns, 12 Aug 1914; citing El Paso, Texas, United States, county courthouses, Texas; FHL microfilm 25,061.
"Texas, County Marriage Index, 1837-1977," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XLDQ-SXW : 10 March 2021), Albert W Leifgreen and Catherine A Burns, 12 Aug 1914; citing El Paso, Texas, United States, county courthouses, Texas; FHL microfilm 25,061.
"United States Census, 1930," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:XH1S-HQX : accessed 25 December 2022), Katherine Liefgreen, Madison, Louisiana, United States; citing enumeration district (ED) ED 99, sheet , line , family , NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll ; FHL microfilm .