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To research and fact-check a history article, break it into specific claims, trace each important claim to the closest available evidence, check that evidence’s origin and limits, and keep notes that let readers follow your reasoning. Use primary sources to investigate what records show and reputable secondary scholarship to supply context and interpretation; neither type should be treated as automatically conclusive.
1. Define the question and identify the claims
Start with the question the article will answer. Then list the facts and interpretations needed to answer it: names, dates, places, numbers, quotations, explanations of cause, and statements about people’s motives. This claim list becomes your research plan and, later, a fact-checking checklist.
Keep what a source directly records distinct from what you infer. A dated entry in a ledger, for example, may document that an item was recorded on a particular day; it does not by itself prove why someone made the entry. Claims tied to an identifiable record are generally easier to check than broad judgments or explanations of motive. Some statements have no single definitive source that can confirm or refute them, as the House of Commons Library’s guide to checking facts explains.
2. Find sources suited to the question
Search for evidence where material on the subject is likely to be held: national, regional, and local archives; libraries and special collections; museums; government records; historical societies; and, where relevant, private collections. The U.S. National Archives’ guide to history in the raw also points researchers toward diaries, interviews, local historical groups, and museums.
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Possible evidence includes official records, letters, diaries, newspapers, photographs, oral histories, interviews, objects, and records created by organizations. Choose sources according to the claim. A photograph may show what was visible from one viewpoint; a letter may reveal what its writer chose to tell a particular recipient; a government record may document an administrative decision. None necessarily establishes the wider story on its own.
3. Use primary and secondary sources for different jobs
Primary sources are evidence created in or near the period under study, such as letters, records, photographs, and objects. They can ground an argument in material from the time, but they still require interpretation and may be incomplete, biased, or mistaken. Secondary sources are later scholarship that analyzes evidence and debates; they help explain context, methods, and historiography, and can lead you to relevant records.
Use the two together rather than treating one as a substitute for the other. The ALA Reference and User Services Association guide to using primary sources online describes primary material as a foundation for an argument and secondary material as context and support. For an important claim, do not rely solely on a textbook, encyclopedia, blog, or archive description if you can examine the underlying evidence. Conversely, a primary document rarely explains by itself how historians understand the event or how it fits into a wider debate.
4. Verify provenance and authenticity
Before relying on an item, establish who created it, when and where, for whom, and for what purpose. Ask how it was preserved and whether the attribution is credible. The source’s intended function matters: a report prepared for officials, a private diary, and a newspaper account may describe the same event from different positions.
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A digitized image or online transcription also has a history of its own. Identify the institution that hosts the digital version and, if different, the institution holding the original. Look for a collection name, item identifier, and complete citation. For a transcription, compare it with a scan or original where possible and read enough surrounding material to check context. The ALA guide to evaluating primary sources online emphasizes that authenticity includes whether an item is what it claims to be and that digital versions need provenance checks too.
Do not treat a plausible-looking citation or source image generated by an AI tool as proof that the record exists. Verify the item in the stated repository and inspect the record or image independently. Machine-generated citations can be useful leads, but the ALA guide to using primary sources online advises checking citations and tracking the source’s stewards, collection, website, stable link, and access date.
5. Evaluate what each source can establish
A source records a perspective shaped by its creator, time, audience, and purpose; it is not a view from nowhere. For each item, ask what its creator could know, what may have been omitted, what incentives shaped the account, and how its language or categories differ from present-day usage. Also check your own assumptions: hindsight can make an outcome seem inevitable, while modern meanings can be mistakenly assigned to historical words.
Apply similar scrutiny to modern scholarship and online material. Check the author’s qualifications and method, the organization’s aims and funding, the evidence cited, and whether uncertainty or counterevidence is addressed. Peer review is evidence of scrutiny, not a guarantee that every claim is correct. The House of Commons Library’s guide to evaluating sources recommends assessing relevance, authority, accuracy, currency where it matters, and purpose. These checks are not a mechanical score: explain why a particular source does or does not support the specific claim you are making.
6. Trace claims and compare evidence
For each important assertion, seek the earliest or original source you can locate, read its surrounding context, and compare it with other relevant records or accounts. Check whether apparent corroboration is genuinely independent: several publications repeating one earlier statement do not amount to several independent confirmations.
Compare sources on the features that matter to the claim:
- Provenance and authenticity: Who created the item, and can its origin be verified?
- Basis of knowledge: Was the creator present, relying on another account, or recording an administrative process?
- Purpose and audience: What was the source meant to do, and who was expected to read or see it?
- Completeness and preservation: Is the record intact, or could missing material change its meaning?
- Independence: Does the account provide separate evidence, or repeat another source?
- Fit to the wording: Does the evidence support the exact claim, or only a narrower statement?
When accounts conflict, state what each one supports and what remains unsettled. Do not resolve a disagreement by counting sources or implying consensus where none is established. For a difficult claim, seek a second genuinely relevant source. If only one is available, make that limitation clear and narrow the claim to what the evidence supports.
7. Keep a claim-to-evidence ledger
Maintain a record for every material assertion while you research. Capture the source’s exact passage or the relevant item details, not just a URL or a paraphrase. A useful ledger includes:
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- The claim as it will appear in the draft.
- The creator, title, and date of the source.
- The collection and repository, plus a page, folio, or item identifier.
- A stable URL or permalink and the date you accessed it.
- The source’s relevant wording or evidence, and your interpretation of it.
- Any caveat, disagreement, or limit on what it establishes.
- Related primary and secondary references.
Use the publication’s required citation style. Chicago Notes and Bibliography is commonly used by historians, according to the ALA guide to using primary sources online, which links to the Chicago Manual of Style. Citation generators can speed up formatting, but check every field and make sure the citation identifies the original item, not just a web page that discusses it.
Careful documentation is part of the argument’s credibility. The American Historical Association’s Statement on Standards of Professional Conduct says: “The sloppier their apparatus, the harder it is for other historians to trust their work.” In context, “apparatus” means the notes, bibliographies, catalogs, databases, and other scholarly tools that document evidence and acknowledge prior work.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.8. Write with calibrated certainty
Attribute a source’s statement to that source, then distinguish it from your own conclusion. Attribute contested interpretations to the scholars or schools of thought that advance them. If the evidence does not establish an exact date or count, qualify it rather than presenting false precision. Where records are incomplete or conflicting, describe the disagreement and the limits of what can be concluded.
If a claim cannot be responsibly checked, narrow it, attribute it carefully, or leave it out. The goal is an account readers can audit: they should be able to see which records support the article, how you interpreted them, and where uncertainty remains.
Quick Recap
Fact-checking checklist
- Have I broken the article into checkable claims and separated evidence from interpretation?
- Can I identify the creator, date, purpose, and provenance of each important source?
- For online records, have I checked the digital host, original holding, item reference, and transcription or image?
- Have I used primary evidence and relevant secondary scholarship for their distinct purposes?
- Does each cited source support the exact wording of the claim?
- Are corroborating sources independent, and have I represented genuine conflicts fairly?
- Can another reader retrace each material claim from my notes and citations?
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