HC
Harold Cook — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Atchison-County, Missouri
Our Model Tree links this Harold Cook across the 1930 and 1940 US Censuses in Atchison-County, Missouri (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 10-person household.
Age 11
b. ~1929
Male
Son
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Atchison-County, Missouri |
| Surname | Cook |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Atchison |
| Additional Details | |
| Highest Grade | No 2 |
| 1935 Residence | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Clay Township |
| Est. Birth Year | ~1929 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| George Cook | Son | — | 7 | ~1933 |
| Clydia Cook | Daughter | — | 10 | ~1930 |
| Rolla Cook | Son | — | 17 | ~1923 |
| Mary Cook | Daughter | — | 15 | ~1925 |
| Shirley Cook | Daughter | — | 3 | ~1937 |
| James Cook | Other | — | 75 | ~1865 |
| Lillie Cook | Spouse | — | 37 | ~1903 |
| Elza Cook | Head | — | 47 | ~1893 |
| Frene Cook | Daughter | — | 13 | ~1927 |
| Harold Cook | Son | — | 11 | ~1929 |
Census Appearances
1930
Atchison, Missouri
Son, age 2
Atchison, Missouri · implied b. ~1928 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Harold |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Tennessee |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Atchison-County, Missouri
Son, age 11
Atchison-County, Missouri · implied b. ~1929 — 10 household members
| Surname | Cook |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Atchison |
| Highest Grade | No 2 |
| 1935 Residence | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Harold Cook
Son · 1940 · age 11 · b. ~1929 · Missouri
★ You are viewing this record
Sibling
Mary Cook
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rolla Cook
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frene Cook
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Cook
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clydia Cook
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Cook
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Atchison-County, Missouri
Open full size
1940 US Federal Census — Atchison-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02082-00140)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bobby Gene Lee | 9 | Son | — | Missouri |
| 42 | Lois Kathleen Lee | 4 | Daughter | — | Missouri |
| 43 | Doris May Lee | 1 | Daughter | — | Missouri |
| 44 | Charley Brown | 51 | Hired Man | Laborer | Iowa |
| 45 | Elza Cook | 47 | Head | Laborer | Missouri |
| 46 | Lillie Cook | 37 | Wife | — | Tennessee |
| 47 | Rolla Cook | 17 | Son | Laborer | Missouri |
| 48 | Mary Cook | 15 | Daughter | Housekeeper | Missouri |
| 49 | Frene Cook | 13 | Daughter | — | Missouri |
| 50 | Harold Cook THIS PERSON | 11 | Son | — | Missouri |
| 51 | Clydia Cook | 10 | Daughter | — | Missouri |
| 52 | George Cook | 7 | Son | — | Missouri |
| 53 | Shirley Cook | 3 | Daughter | — | Missouri |
| 54 | James Cook | 75 | Father | — | Indiana |
| 55 | David Johnson | 47 | Head | — | Iowa |
| 56 | Wilma Johnson | 31 | Wife | — | Kansas |
| 57 | Delores Johnson | 6 | Daughter | — | Missouri |
| 58 | David Johnson | 2 | Son | — | Missouri |
| 59 | Shirley Johnson | 0 | Daughter | — | Missouri |
| 60 | Earl Morrison | 25 | Head | Laborer | Missouri |
| 61 | Faye Morrison | 23 | Wife | — | Missouri |
| 62 | Lee Morrison | 4 | Son | — | Missouri |
| 63 | Samuel King Johnson | 75 | Head | Farmer | Iowa |
| 64 | Cordelia Viola Johnson | 69 | Wife | — | Iowa |
| 65 | Edward Johnson | 25 | Son | Laborer | Missouri |
| 66 | William Ree | 60 | Head | Farmer | Missouri |
| 67 | Anna Ree | 49 | Wife | — | Kansas |
| 68 | Jesse Ree | 23 | Son | Laborer | Missouri |
| 69 | Charles Ree | 19 | Son | Farm Worker | Missouri |
| 70 | Eugene Chastain | 24 | Boarder | Laborer | Missouri |
| 71 | Huell Sharp | 47 | Head | Laborer | Nebraska |
| 72 | Leola Sharp | 38 | Wife | — | Missouri |
| 73 | Arnold Sharp | 16 | Son | Farm Worker | Missouri |
| 74 | Carol Dean Sharp | 13 | Son | — | Missouri |
| 75 | Clara Belle Sharp | 11 | Daughter | — | Missouri |
| 76 | Irvin Sharp | 9 | Son | — | Missouri |
| 77 | Morris Sharp | 6 | Son | — | Missouri |
| 78 | Julia Jane Sharp | 4 | Daughter | — | Missouri |
| 79 | Frank Chastain | 50 | Head | — | Missouri |
| 80 | Theresa Chastain | 48 | Wife | — | Missouri |
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)