U.S. census rules: the "negro blood" column and the 1930 one-way door
Record: the document says itPattern: documents line upOur lens: how we read itNext dig: help us find it
Year: 1930
The case
Our case: the U.S. census had a rule that took Indian families with Black kin out of Indian and wrote them Negro. Indian mixed with white stayed Indian. Indian mixed with Negro went Negro. The door out of Indian only swung one way, and it swung on our families.
What this case proves for us
Point 3: We were renamed on paper. A written federal rule, in the census's own instructions, moved Indian-Negro people to Negro.
Point 7: Same games, new names. The same mix got two answers depending on which side it leaned: the rule protected white mixing and erased ours.
Background
In 1910 the census used a special Indian schedule that measured blood in fractions. By 1930 the instructions to census takers set a rule for people of mixed Indian and Negro blood.
Our evidence
Exhibit A · Record: 1910: the blood columnsThe Indian schedule had columns for Indian, white and negro blood: "For Indians of mixed blood all three columns should be filled, and the sum, in each case, should equal 1," "verified by inquiry of the older men of the tribe."
Exhibit B · Record: 1930: the one-way doorA person "part Indian and part Negro also was to be listed as Negro unless the Indian blood predominated"; a person of mixed white and Indian blood "was to be returned as an Indian."
Exhibit C · Pattern: Two mixes, two answersIndian with white stayed Indian; Indian with Negro went Negro.
Exhibit D · Our lens: Our lensThe federal form itself was the door out of Indian for our families, and it only swung one way.
The colonizer lens
The census just counted people as they were.
Who says it: The usual view of census race data.
What it covers: The written rules that told the census taker which way to send a family.
Cross-examination
Why did Indian and white stay Indian, while Indian and Negro went Negro?
Who decided whether the Indian blood predominated, and how? The census taker, at the door?
Verdict: we won
We won on the census's own instructions. The rule sent Indian families with Black kin to Negro, and kept Indian families with white kin Indian.
How we won
1910: the form measured negro blood in Indians, in fractions.
1930: part Indian and part Negro was listed Negro unless the Indian blood predominated.
The contrast: part white and part Indian was returned as an Indian.
The burden is on the colonizer lens: Whoever says the census counted people as they were has to explain why the same rule sent white mixing one way and ours the other.
Our next dig: The original 1930 enumerator wording, and families who moved from Indian to Negro between 1910 and 1930. Found something? Help us dig.
Where this gets us
Level 2: Paperwork. The rule in writing: families can point to it when their census line changes from Indian to Negro.
To reach level 3, Standing, we still need:
The original 1930 wording, not only the Census Bureau's summary.
Families whose line changed between 1910 and 1930, found and counted.
A way to correct the race on those records, using the rule as the reason.
The original card
SUMMARYU.S. census rules: the "negro blood" column and the 1930 one-way door (Nov 13, 2026; dossier 14)
RECORDthe 1910 special Indian schedule had columns for the proportions of Indian, white and negro blood. Enumerators were told: "For Indians of mixed blood all three columns should be filled, and the sum, in each case, should equal 1," to be "verified by inquiry of the older men of the tribe."
RECORDthe 1930 instructions, as summarized by the Census Bureau: a person "part Indian and part Negro also was to be listed as Negro unless the Indian blood predominated," while a person of mixed white and Indian blood "was to be returned as an Indian."
PATTERNthe same kind of mixed family went two ways by rule: Indian with white stayed Indian; Indian with Negro went Negro
LENS (WW9)the federal form itself was the door out of Indian for our families, and it only swung one way
OPENthe original 1930 wording (the quote is the Census Bureau's summary); counts of families who moved from Indian to Negro between 1910 and 1930
SOURCEIPUMS, 1910 Indian schedule instructions; U.S. Census Bureau, 1930 instructions.