Derald Langham
American geneticist

Derald George Langham (May 27, 1913 – May 10, 1991) was an American agricultural geneticist, sesame researcher, and founder of the Genesa Foundation.
He is known as the "father of sesame" in the Western Hemisphere for his basic research on the genetics of sesame. Most of the sesame lines grown in the Americas came from his breeding work. Sesame plants are a rich source of vitamins and minerals, and Langham focused on cross-breeding the plant into more fruitful versions. He also attempted to look for other uses of sesame beyond a mere food source.
Derald Langham is less known for his genetic work in corn and beans. The Rockefeller Institute in Mexico incorporated his varieties into their materials and his genes are carried on in almost every corn hybrid used in the world.
Family and education
He was born on a 160-acre (65-hectare) farm in Polk City, Iowa, where his interest in plants and animals was piqued at an early age.
Langham attended Iowa State College and studied agronomy, where he met the head of the genetics department, Dr. Ernest W. Lindstrom.
This brief starts where responsible research should: with the source description of “Derald Langham” as american geneticist. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the general reference register because the source frames it as american geneticist. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Dec 22, 2025. The linked authority identifier is Q5261326. VIAF identifies the subject as 29142366. The Library of Congress control number is no97070631. 3 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1913 and 1991.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Derald Langham”, its source revision and the description used here.
- Expand the search: follow Derald Langham primary sources, Derald Langham archive and Derald research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Derald Langham”?
- What terminology or title could unlock a more precise catalogue search?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “Derald Langham” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.