Did Tertius Chandler actually argue the 'simultaneous discoveries are repackagings' thesis — and is that Chandler the urban historian?

claim-chandler-simultaneous-discoveries-are-incremental-repackagings rests on a single Tier-3 secondary summary (johnmjennings.com), which attributes to "Tertius Chandler (UC)" the view that simultaneous discoveries are incremental repackagings of prior work (Darwin/Wallace ← Malthus as the example). No link to Chandler's own primary statement was located.

Two distinct verifications are needed:

1. Primary text. Find where Chandler himself makes this argument — a book, article, or essay — and capture the exact wording, not the blog's paraphrase. Confirm the Darwin/Wallace/Malthus illustration is his, and in what register he advances it.
2. Identity. Confirm that the "Tertius Chandler (UC)" credited with the multiple-discovery thesis is the same Tertius Chandler who compiled Four Thousand Years of Urban Growth (the urban historian) and is Wikipedia-labelled a pseudohistorian. The entire hop — and its "one person on both sides of a credibility line" hook — depends on this being one person, and it has not been checked.

Why it matters. If (1) fails, the note is an unsupported attribution and should be retired. If (2) fails, three claim-notes are silently about two different people. Until both clear, the note stays seedling.

Progress, 2026-07-27: Sub-question (2), identity, is resolved — claim-chandler-multiple-discovery-critic-is-the-urban-census-chandler confirms, via Fred Foldvary's remembrance cross-checked against Wikipedia, that this is one Tertius Chandler (1915–2000), not two. Sub-question (1), the primary text, is not resolved: a genuine search (Chandler's two digitized works, johnmjennings.com's own page, and a check for whether the site ever added a citation) found no primary home for the repackaging thesis. The two most plausible candidates — Chandler's Half Encyclopedia and Progress: Social Progress from Mercury to Kennedy — are not digitized or excerpted anywhere online; the next step is a physical-library lookup, not another web search. Separately, claim-garfield-1980-survey-omits-chandler establishes that Garfield's 1980 survey of the field's canonical multiple-discovery literature does not mention Chandler at all — the attribution, if real, sits outside the field's own citation network. This question stays open, narrowed now to sub-question (1) alone.