Most census records have KUEHN because when their name is signed or written out it does look like Kuehn not KUELIN............

1900 -- Cass Township, LaPorte, Indiana, United States
WILLIE age:14
Marital Status Single
Birth Date Feb 1886--Birthplace Indiana
Father's Birthplace Germany/ Mother's: Germany
Herman Kuehn Head M 56 Germany
Ernestine Kuehn Daughter F 20 Indiana
Pauline Kuehn Daughter F 17 Indiana
Willie Kuehn Son M 14 Indiana
Herman Kuehn Son M 12 Indiana
Louis Kuehn Son M 9 Indiana
Mathilde Kuehn Daughter F 7 Indiana
Gustav Kuehn Son M 5 Indiana
Honnie Kuehn Mother F 80 Germany
Citing this Record:
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MM1T-2J1 : accessed 17 August 2015), Willie Kuehn in household of Herman Kuehn, Cass Township, LaPorte, Indiana, United States; citing sheet 4B, family 80, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,240,384.




Draft Registration Cardsigned Sept. 12 1918
Age:32 "Labor" at Western Steel Car Co.
NAME William Louis KUELIN (it does look like Kuehn)
Father as Herman Kuehn, Wanatah, Indiana


1940 -- Edgewater, Election Precinct 28, Jefferson, Colorado,
Age 54
Marital Status Single
Relationship to Head of Household Head
Birthplace Indiana
Birth Year (Estimated) 1886
Occupation: "Laborer" Street Construction
Last Place of Residence Same House
Citing this Record:
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VR6D-RGN : accessed 17 August 2015), William L Kuehn, Edgewater, Election Precinct 28, Jefferson, Colorado, United States; citing enumeration district (ED) 30-44, sheet 61A, family 293, NARA digital publication T627 (Washington, D.C.: National Archives and Records Administration, 2012), roll 465.


1930 -- Coalmont, Jackson, Colorado, United States
Age 44
Marital Status Single
Race White
Relationship to Head of Household (Original) Boarder
Birth Year (Estimated) 1886--Birthplace: Indiana
Father's Birthplace Germany/Mother's:: Germany
Douglas R Langholf Head M 44 Wyoming
Bertha L Langholf Wife F 40 Colorado
Marston D Langholf Nephew M 13 Nebraska
William L Kuehn Boarder M 44 Indiana
William L West Boarder M 34 Oklahoma
Eugene P Henry Boarder M 36 Missouri
Citing this Record:
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X74W-LHK : accessed 17 August 2015), William L Kuehn in household of Douglas R Langholf, Coalmont, Jackson, Colorado, United States; citing enumeration district (ED) 0003, sheet 4A, family 90, line 32, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 242; FHL microfilm 2,339,977.