"Utah Deaths and Burials, 1888-1946," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/F855-MFS : 5 December 2014), Leo Kenneth Cook, 01 Mar 1948; citing Salt Lake City, Salt Lake, Utah, reference Rn 436; FHL microfilm 26,581.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M8PL-QJR : 14 December 2015), Leo K Cook in household of Arthur J Cook, Pleasant Grove, Utah, Utah, United States; citing sheet 5A, NARA microfilm publ
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/VT43-FY1 : 17 May 2014), Leo K Cook, Election Precinct 1, Salt Lake, Utah, United States; citing enumeration district (ED) 18-1A, sheet 11A, family 200,
"Utah Death Certificates, 1904-1964", database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/XZL8-5M6 : 11 September 2015), Leo Kenneth Cook, 1948.
"Utah, County Marriages, 1887-1940", database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/Q2MB-7JZ7 : 2 February 2016), Leo Kenneth Cook and Esther Dea Rockwood, 1938.
"United States Census, 1930", database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/XH68-P86 : 8 December 2015), Leo K Cook in entry for Arthur Cook, 1930.
"Utah, Salt Lake County Death Records, 1849-1949," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/NQ4H-PWM : 5 December 2014), Leo Kenneth Cook, 01 Mar 1948; citing Salt Lake City, Salt Lake, Utah, Management and Archives, Salt L
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/J58J-YMW : 20 May 2014), Leo Cook, Mar 1948; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National
"BillionGraves Index," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KBYZ-4K1 : 29 December 2015), Leo K Cook, died 1948; citing BillionGraves (http://www.billiongraves.com : 2012), Burial at Wasatch Lawn Memorial Park and Mortuary, Salt La
"Utah Deaths and Burials, 1888-1946," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/F855-MFS : 5 December 2014), Leo Kenneth Cook, 01 Mar 1948; citing Salt Lake City, Salt Lake, Utah, reference Rn 436; FHL microfilm 26,581.
"BillionGraves Index," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KBYZ-4K1 : 29 December 2015), Leo K Cook, died 1948; citing BillionGraves (http://www.billiongraves.com : 2012), Burial at Wasatch Lawn Memorial Park and Mortuary, Salt La