"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JPM6-VPP : 19 May 2014), Katherine A Mcdonough, 07 Dec 2010; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XH4P-C47 : accessed 21 December 2018), Catherine Mcdonough in household of Lawrence Mcdonough, Philadelphia (Districts 0251-0500), Philadelphia, Pennsylvania, United States; citing enumeration district (ED) ED 260, sheet 9A, line 27, family 139, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 2143; FHL microfilm 2,341,877.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KQDY-SHD : 15 March 2018), Katherine Mcdonough in household of Laurence Mcdonough, Lower Merion Township, Montgomery, Pennsylvania, United States; citing enumeration district (ED) 46-115, sheet 62A, line 16, family , 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 3580.
"Find A Grave Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q2S3-7ZY1 : 15 March 2016), Katherine McDonough, ; Burial, Philadelphia, Philadelphia, Pennsylvania, United States of America, Old Cathedral Cemetery; citing record ID 156669237, Find a Grave, http://www.findagrave.com.
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