The NYC Space/Time Directory
summary
The NYC Space/Time Directory at The New York Public Library turns maps photos directories into a working, searchable time‑travel service using open data search APIs data visualizations and crowdsourcing. It georeferences thousands of historical maps with a crowd map rectification tool, crowdsources transcription of menus and house numbers (people come by the thousands), produces downloadable newline‑delimited GeoJSON datasets, a historical geocoder, and publishes code on GitHub — the pipeline runs and the data is live.
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