AC
Arthur Cook — 1940 US Census Record
Model Tree available1940 United States Federal Census · Calhoun-County, Iowa
Our Model Tree links this Arthur Cook across the 1920, 1930 and 1940 US Censuses in Calhoun-County, Iowa (XGBoost, ~Confirmed), with identified parents Edward & Lora — first a son (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Calhoun-County, Iowa |
| Surname | Cook |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Louris |
| 1935 Residence (County) | Webster |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 20 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Iowa |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Lohrville Town |
| Est. Birth Year | ~1908 |
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 Arthur | Age | Birth yr |
|---|---|---|---|---|
| Edward Cook | Head | — | 68 | ~1872 |
| Arthur Cook | Son | — | 32 | ~1908 |
| Lora Cook | Spouse | — | 63 | ~1877 |
Census Appearances
1920
Webster, Iowa
Son, age 13
Webster, Iowa · implied b. ~1907 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Webster, Iowa
Son, age 23
Webster, Iowa · implied b. ~1907 — 29 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Calhoun-County, Iowa
Son, age 32
Calhoun-County, Iowa · implied b. ~1908 — 3 household members
| Surname | Cook |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Louris |
| 1935 Residence (County) | Webster |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 20 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Iowa |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Arthur Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Edward Cook (~0.92 confidence) and mother Lora Cook (~0.92 confidence) and mother Iona Cook (~0.92 confidence) and father Andrew Anderson (~0.92 confidence) and father Edward Cook (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Edward Cook
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Lora Cook
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Iona Cook
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
Andrew Anderson
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Edward Cook
b. ~1893
Source father
● Household
· direct · ~0.92
This person
Anchor record
Arthur Cook
Son · 1940 · age 32 · b. ~1908 · Iowa
★ 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 — Calhoun-County, Iowa
Open full size
1940 US Federal Census — Calhoun-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01144-00478)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ross D Picht | 41 | Head | Store Keeper | Iowa |
| 2 | Hattie Picht | 41 | Wife | — | Germany |
| 3 | Darlene Picht | 17 | Daughter | — | Iowa |
| 4 | Florence Picht | 15 | Daughter | — | Iowa |
| 5 | Melvin Picht | 11 | Son | — | Iowa |
| 6 | Merle Picht | 9 | Son | — | Iowa |
| 7 | Jennie Mrs. Hande | 80 | Head | — | Illinois |
| 8 | Lester D Richman | 64 | Head | Retired | Wisconsin |
| 9 | Jennie Richman | 71 | Sister | — | Wisconsin |
| 10 | Tom Lorraine | 52 | Head | Towerman | Iowa |
| 11 | Frances Lorraine | 16 | Daughter | — | Iowa |
| 12 | Wayne Lorraine | 24 | Son | — | Wisconsin |
| 13 | Cecil Hucka | 30 | Head | Service Work | Iowa |
| 14 | Yvonne Hucka | 24 | Wife | — | Iowa |
| 15 | Cecil Logan | 58 | Lodger | Carpenter | Iowa |
| 16 | Blanche Mrs. Gill | 35 | Head | — | Illinois |
| 17 | Leslie Gill | 15 | Son | — | Iowa |
| 18 | Geraldine Gill | 9 | Daughter | — | Minnesota |
| 19 | Frankie Gill | 7 | Son | — | Minnesota |
| 20 | Fred P Reesler | 66 | Head | Laborer | Pennsylvania |
| 21 | Elmer Mcclure | 39 | Head | Clerk | Iowa |
| 22 | Ilah Mrs. Mcclure | 34 | Wife | — | Iowa |
| 23 | Edward Cook | 68 | Head | Farmer | Illinois |
| 24 | Lora Mrs. Cook | 63 | Wife | — | Illinois |
| 25 | Arthur Cook THIS PERSON | 32 | Son | Farmer | Illinois |
| 26 | Cecil Patterson | 18 | Head | Laborer | Iowa |
| 27 | Verla Mrs. Patterson | 17 | Wife | — | Iowa |
| 28 | E. V. Peterson | 51 | Head | Bus Driver | Iowa |
| 29 | Mabel Mrs. Peterson | 42 | Wife | — | Iowa |
| 30 | Phyllis Ann Peterson | 15 | Daughter | — | Iowa |
| 31 | Bernice Peterson | 8 | Daughter | — | Iowa |
| 32 | L. D. Calf | 49 | Head | Carpenter | Iowa |
| 33 | Mary Mrs. Calf | 47 | Wife | — | Iowa |
| 34 | Don Calf | 23 | Son | — | Iowa |
| 35 | Phyllis Calf | 22 | Daughter | — | Iowa |
| 36 | Lorraine Calf | 20 | Daughter | — | Iowa |
| 37 | Leo Calf | 18 | Son | Farmer | Iowa |
| 38 | Charles Calf | 16 | Son | — | Iowa |
| 39 | Marjorie Calf | 12 | Daughter | — | Iowa |
| 40 | Betty Ann Calf | 10 | Daughter | — | Iowa |
Pedigree Summary
Arthur
Gen 1 · 5 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)