"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MLPC-1TL : accessed 26 May 2021), Cyril Mcmann in household of Robert Mcmann, Arenac, Arenac, Michigan, United States; citing enumeration district (ED) ED 24, sheet 7A, family 151, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 635; FHL microfilm 1,374,648.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XQT5-RNB : accessed 26 May 2021), Cyril Mcmann in household of Effie A Mcmann, Bay City, Bay, Michigan, United States; citing enumeration district (ED) ED 29, sheet 11B, line 93, family 244, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 975; FHL microfilm 2,340,710.
"United States Census, 1940," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:K424-SQN : 10 January 2021), Cyril McMann in household of Timothy July, Bay City, Bay, Michigan, United States; citing enumeration district (ED) 9-7, sheet 1A, line 12, family 3, 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 1727.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JTGF-ZP2 : 9 January 2021), Cyril Mcmann, Nov 1971; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
"Michigan Death Index, 1971-1996," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VZB4-CG8 : 4 December 2014), Cyril Mcmann, 15 Nov 1971; from "Michigan, Deaths, 1971-1996," database, Ancestry (http://www.ancestry.com : 1998); citing Bay City, Bay, Michigan, death certificate number 65831, Michigan Department of Vital and Health Records, Lansing.
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