When a research link disappears, preserve the source identity and the claim it supported before searching for a replacement. Determine whether the material moved, changed, or is no longer verifiable. Update the manuscript according to the evidence you can actually establish, and keep a record of uncertainty instead of substituting a convenient link that supports a different statement.
Recover the identity behind the address
Look for the source's title, author or issuing organization, publication date, and the date it was consulted. A bare URL often provides too little information to identify the material after a website changes. Search the project's research notes and accepted drafts for the context recorded when the source was first used.
Preserve the original address as part of the history even if it no longer works. Mark its current status clearly rather than deleting it from the record. A future reviewer may need to distinguish an unavailable source from a citation that was never verified in the first place.
Identify the exact manuscript dependency
Find the claim, quotation, example, or interpretation that relied on the material. Record the relevant passage and the version of the manuscript in which it appears. The same source may have supported several different statements, so checking only the first citation can miss important dependencies.
Separate direct evidence from background reading. Losing access to an optional background article has different consequences from losing the only source for a precise factual assertion. Prioritize review according to what the book asks readers to believe, not merely according to how often the broken address appears.
Search for the same source before choosing another
Check whether the issuing organization has moved the material or replaced it with an identifiable revision. Compare title, date, authorship, and substantive content where available. A page at the same address can also change, so a working link alone does not prove that it still contains the evidence originally consulted.
If the material has a newer version, determine whether it supports the manuscript's wording. The updated source may correct, narrow, or withdraw an earlier statement. Record that relationship explicitly instead of treating a newer publication date as proof that the existing passage remains accurate.
Use retained records within their actual limits
Review any source notes or copies the project appropriately retained. These can help identify what was consulted and what the manuscript drew from it, but they should be described accurately. An excerpt without its surrounding context may not be enough to resolve the meaning of a disputed sentence.
Keep access history separate from permission to reproduce material in the book. Being able to inspect a retained document does not by itself answer every publication-use question. The research record should support traceability without turning a preservation step into an unsupported claim about allowed reuse.
Decide whether the passage can remain
If another reliable source independently supports the same claim, review it directly and update the evidence record. Do not attach a loosely related link simply to remove the appearance of a missing citation. The replacement must support the actual wording and level of certainty used in the manuscript.
If adequate support cannot be established, narrow the passage, identify the uncertainty where appropriate, or remove the unsupported assertion. Document the editorial choice and the affected locations. A transparent correction is more useful than maintaining a precise claim whose evidentiary basis the project can no longer explain.
Improve the record for future revisions
For newly checked sources, save the identifying details, consultation date, relevant claim, and a useful location within the material. Note whether the source is likely to change and which edition or version was reviewed. This makes later checks possible without requiring someone to reconstruct the entire research process.
Before the next export, confirm that the manuscript, bibliography, and research register agree about the accepted source. Preserve the former reference as superseded history where useful. The result should show both what currently supports the book and how the project resolved the missing link, without presenting a successful URL check as a complete evidence review.
Frequently asked questions
Clear answers for this publishing decision.
Does a dead link mean the source was false?
No. A source can become unavailable for many reasons. Investigate its identity and the evidence behind the manuscript claim instead of inferring truth or falsity from link status alone.
Can I replace it with the first similar search result?
Only after reviewing whether that source supports the actual statement. Similar subject matter is not enough to preserve a citation's evidentiary role.
What if I kept only a short quotation?
Use it to guide identification, but assess whether missing context prevents reliable interpretation. Do not reconstruct unsupported surrounding claims from memory.
Should I remove every claim whose original URL changed?
No. First establish whether the same material moved or adequate evidence remains available. Revise or remove the claim when its support cannot be responsibly established.
How do I get from an idea and a brief to an editable manuscript I can finish?
Write the brief first, generate a structure you can edit, then draft and revise the manuscript in reviewable sections so one change never overwrites work you already approved.
Start a book project from a brief