Explore — Source Library

659,992

Entities

people, places, concepts

27,844

Linked to Wikidata

with QIDs

3,319

With Dates

birth/death years

2,257

Mapped

with coordinates

22,444

Source Books

digitized texts

Visualizations

Map

Geographic distribution of places, institutions, and people across Europe and beyond.

2,257 locations plotted

Timeline

Lifespans of historical figures: who was alive when, and how intellectual movements clustered.

3,319 dated figures

Coming soon

Network

How entities connect through shared books, revealing intellectual clusters and bridging figures.

659,992 connected entities

Books by Century

Distribution of books across centuries. Click a cell to search.

Data Sources

All visualizations on this page are derived from the following data pipeline. Entity data is extracted by AI from book indexes, then enriched with structured data from Wikidata.

Entity Index659,992

Extracted from AI-generated book indexes (people, places, concepts)

Wikidata Alignment27,844

Entities linked to Wikidata via Wikipedia URLs and name matching

4.2%

Biographical Dates3,319

Birth/death years from Wikidata claims P569/P570

Geographic Coordinates2,257

Lat/lon from Wikidata claim P625 (places) and P19 (birthplaces)

Source Books22,444

Digitized historical texts from 13 partner libraries

Pipeline: Book indexes are generated by Gemini AI from OCR'd page text. Entities (people, places, concepts) are extracted and deduplicated across all books. Wikidata alignment matches entities by Wikipedia URL or exact name search, pulling in structured biographical dates (P569/P570), geographic coordinates (P625), and QIDs. Only high-confidence matches are used — lower-confidence suggestions are excluded from counts.