Skip to content

Search
Timeline
Map
Graph
Threads
Civilizations
Eras
Random

A living digital encyclopedia of human civilization. Begin anywhere; follow the threads.

¶ Browse

Threads
Civilizations
Eras
Timeline
Map
Graph
Random entry
About

¶ Sources & licensing

Adapted prose from Wikipedia under CC BY-SA 4.0.
1911 Encyclopædia Britannica — public domain in the United States.
Imagery via Wikimedia Commons; per-image attribution on each entry.

¶ Colophon

Set in EB Garamond and JetBrains Mono. Built on Next.js 16 + Postgres 17 with pgvector + Drizzle ORM, deployed to Vercel atop a Neon Postgres branch.

Source at github.com/chloeilabs/alexandria.

Alexandria · MMXXVIExplicit colophon · 2026

Clemens Roothaan · Alexandria

Person · 1918 CE – 2019 CE

Clemens Roothaan

Also known as

Clemens C. J. Roothaan
Clemens C. J. Roothaan
Clemens C. J. Roothaan
Clemens C. J. Roothaan
Clemens C.J. Roothaan
Clemens C.J. Roothaan

archival plate · Clemens Roothaan · placeholder

This entry is a stub. The Library is awakening — a longer account is being written.

Connected to

died inChicago

+ 11 further connections to entries not yet ingested