Open contribution

Build the archive
together.

Trace a building, anchor a scan, or check what the OCR read. Anyone with an account can contribute; an admin reviews before anything is published. There are only a handful of us, so a single afternoon's work is a visible share of the whole.

OCR & Triage

Crop a map's neatline, set tile priorities, and check the place names the OCR pass read off the sheet. Around 950 distinct names are waiting; 43 have been checked.

Start triaging

Trace buildings

Outline buildings, roads, and waterways on a georeferenced map. 46 shapes have been traced so far, all on the 1882 cadastral survey.

Open the tracer

Georeference a map

Place ground control points in the Allmaps Editor to anchor a historical map to real-world coordinates.

See what needs georef