The accounts记述 · the ancient witnesses
Greek historians · 希腊史家
Diodorus Siculus — Library of History （狄奥多罗斯·历史丛书）primary source · 源典24 loci · well-attested
§ 15.71–75 · 24/24 in the cited books
Bk 15.72 — after the 'Tearless Battle' the Arcadians 'founded in a favourable location the city called Great, Megalopolis, by combining to form it twenty villages'卷十五 72：“无泪之战”后，阿卡狄亚人“择善地建立名为『大城』的麦加洛波利斯，合二十村而成之”
Xenophon — Hellenica （色诺芬·希腊史）dated witness · 系年见证21 loci · well-attested
§ 7.1–2
Provenance: “primary source” = curated canonical witness (editorial); “dated witness” = derived from the ToposText date index by year-span, with the matched loci count. Sparse counts may include incidental mentions.出处：「源典」为校订之正典见证（编辑判断）；「系年见证」由 ToposText 系年索引按年代跨度推得，附匹配条目数；稀少者或含偶涉。
On the timeline时间轴上
→ See this and all 18 historians on the chronology spine于编年脊柱上一览本事件与全部 18 位史家