"United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MHMC-BRM : 13 January 2022), Conrad Gick in household of Jasper Gick, New Haven, Adams Township, Allen, Indiana, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MKLP-YTC : accessed 23 February 2022), Coonad Gick, Adams, Allen, Indiana, United States; citing enumeration district (ED) ED 3, sheet 2A, family 23, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 338; FHL microfilm 1,374,351.
"United States Census, 1930," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:X41K-BCS : accessed 23 February 2022), Conrad P Gick, Fort Wayne, Allen, Indiana, United States; citing enumeration district (ED) ED 34, sheet 4A, line 34, family 71, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 576; FHL microfilm 2,340,311.
"United States Census, 1940," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:V11M-4P5 : 5 January 2021), Conrad Gick in household of Henry P Gick, Fort Wayne, Allen, Indiana, United States; citing enumeration district (ED) 94-64A, sheet 7B, line 48, family 127, 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 1117.