"Colorado Statewide Marriage Index, 1853-2006," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KNQK-4NM : 10 December 2017), Dan S Reid and Lois L Dakan, 07 Jan 1939, Douglas, Douglas, Colorado, United States; citing no. A 2772, State Archives, Denver; FHL microfilm 1,690,124.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MX2Z-RVC : accessed 30 July 2019), Louis Dakan in household of Frank Dakan, Glen Grove, Douglas, Colorado, United States; citing ED 64, sheet 1A, line 27, family 6, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 157; FHL microfilm 1,820,157.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X7WL-F4W : accessed 30 July 2019), Lois Dakan in household of Frank Dakan, Glen Grove, Douglas, Colorado, United States; citing enumeration district (ED) ED 6, sheet 1A, line 46, family 9, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 232; FHL microfilm 2,339,967.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VR6W-PK5 : 26 July 2019), Lois Reid in household of Dan S Reid, Election Precinct 5, Douglas, Colorado, United States; citing enumeration district (ED) 18-7, sheet 1B, line 49, family 16, 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 460.