HC
Harold Cook — 1940 US Census Record
Model Tree available1940 United States Federal Census · Putnam-County, Indiana
Our Model Tree links this Harold Cook across the 1920, 1930 and 1940 US Censuses in Putnam-County, Indiana (XGBoost, ~Confirmed), with identified parents Arthur & Cyril — first a son (b.~1919), then head of a 3-person household.
Age 21
b. ~1919
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Putnam-County, Indiana |
| Surname | Cook |
| Given Name | Harold M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Greencastle City |
| 1935 Residence (County) | Putnam |
| Additional Details | |
| Occupation | Station WEBQ |
| Industry | PW |
| Class of Worker | 200 |
| Highest Grade | C 2 |
| 1935 Residence | 42 |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Station Webq |
| Township / Ward | Greencastle City |
| Est. Birth Year | ~1919 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Harold Cook | Son | — | 21 | ~1919 |
| Nelle Cook | Spouse | — | 48 | ~1892 |
| John Cook | Head | — | 54 | ~1886 |
Census Appearances
1920
Putnam, Indiana
Son, age 1
Putnam, Indiana · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Herald M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Putnam, Indiana
Son, age 11
Putnam, Indiana · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Harold M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Putnam-County, Indiana
Son, age 21
Putnam-County, Indiana · implied b. ~1919 — 3 household members
| Surname | Cook |
| Given Name | Harold M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Greencastle City |
| 1935 Residence (County) | Putnam |
| Occupation | Station WEBQ |
| Industry | PW |
| Class of Worker | 200 |
| Highest Grade | C 2 |
| 1935 Residence | 42 |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Harold Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Arthur Cook (~0.92 confidence) and father Cyril Cook (~0.92 confidence) and father John Cook (~0.92 confidence) and mother Nellie Cook (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Cook
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Cyril Cook
b. ~1887
Source father
● Household
· direct · ~0.92
Father
John Cook
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Nellie Cook
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Cook
Son · 1940 · age 21 · b. ~1919 · Indiana
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Putnam-County, Indiana
Open full size
1940 US Federal Census — Putnam-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01088-00558)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Carmen E. Seiwert | 33 | Head | Depauw Univ | Oregon |
| 42 | Joe Mccord | 45 | Head | State Of Indiana | Indiana |
| 43 | Catherine T. Mccord | 42 | Wife | — | Indiana |
| 44 | James M. Frazer | 24 | Head | Ind. State Police | Indiana |
| 45 | Alice A. Frazer | 24 | Wife | — | Indiana |
| 46 | Lorelai A. Frazer | 0 | Daughter | — | Indiana |
| 47 | John H. Allee | 51 | Head | Own Office | Indiana |
| 48 | Doris J. Allee | 31 | Wife | Comp. Office Depauw | Indiana |
| 49 | Elmo C. Sweet | 33 | Head | Funeral Home | Indiana |
| 50 | Virginia F. Sweet | 26 | Wife | Put. Co. Hospital | Indiana |
| 51 | Mildred Dimmick | 49 | Head | Depauw Univ | Ohio |
| 52 | Herman C. Berg | 28 | Head | Depauw Univ | Kansas |
| 53 | Patience W. Berg | 22 | Wife | — | Indiana |
| 54 | Sara M. Hatfield | 22 | Head | Central Nat. Bank | Illinois |
| 55 | Pauline Jones | 19 | Head | Central Nat. Bank | Indiana |
| 56 | Charles B. Havens | 44 | Head | — | Indiana |
| 57 | Irene P. Havens | 45 | Wife | — | Colorado |
| 58 | Virginia E. Havens | 18 | Daughter | — | Colorado |
| 59 | Martha Havens | 14 | Daughter | — | Indiana |
| 60 | Clyde C. Jr. Henley | 28 | Head | Purina Mills | Indiana |
| 61 | Lois B. Henley | 27 | Wife | Secretary | Indiana |
| 62 | Courtland C. Gillen | 59 | Head | Own Office | Indiana |
| 63 | Nelle F. Gillen | 46 | Wife | — | Indiana |
| 64 | Rachel M. Gillen | 15 | Daughter | — | Indiana |
| 65 | Samuel J. O'Connell | 46 | Head | State Gross Income Dept | Indiana |
| 66 | Zelma S. O'Connell | 45 | Wife | — | Indiana |
| 67 | Samuel J. Jr. O'Connell | 19 | Son | — | Indiana |
| 68 | William A. Steele | 50 | Head | Greencastle Motors | Canada |
| 69 | Lorena V.A. Steele | 48 | Wife | — | Iowa |
| 70 | Robert W. Steele | 20 | Son | — | California |
| 71 | Eugene B. Taylor | 62 | Head | High Point Belting | Indiana |
| 72 | Blanche A. Taylor | 59 | Wife | — | Ohio |
| 73 | Robert B. Moore | 33 | Daughter | Truehaup Trailers | Indiana |
| 74 | Charlotte J. Moore | 26 | Son-in-law | — | Indiana |
| 75 | Eugenia Moore | 7 | Daughter | — | Indiana |
| 76 | Norma J. Slavens | 19 | Maid | Private Home | Indiana |
| 77 | John D. Cook | 54 | Head | Hardware Store | Indiana |
| 78 | Nelle M. Cook | 48 | Wife | — | Indiana |
| 79 | Harold M. Cook THIS PERSON | 21 | Son | Station Webq | Indiana |
| 80 | Claude F. Mathes | 76 | Head | City Cemetery | Indiana |
Related Census Records
Pedigree Summary
Harold
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)