Help us place our digitised maps

We have been very pleased to see all of the maps have been completed, and congratulate both Maurice Nicholson and Sue White for having submitted the most points! Both Maurice and Sue are seasoned online georeferencers, having contributed significant work to both this and the initial release of BL Georeferencer in February. For this second round, they each added 3,300 points to the maps, an amazing number that testifies to a commitment of time, attention to detail, and in many cases, research skills and a keen curiosity about place.

If you wish to view the maps that were "placed" to their locations, or improve the georeferencing by adding points, see Maps already georeferenced.

Here's how it works...

See a video explanation of how to use BL Georeferencer
1. By choosing to view a map in the project and selecting the Georeference tab, you are presented with that scanned image on the left. A modern map will appear on the right.
2. Zoom into the old map enough to read it, and then find the corresponding location on the modern map. Use the gazetteer at the top if necessary. Click on the “This map” tab to access the map's title and a description.
3. Click on one map to assign a point, then assign a point at the same location on the other map.
4. Assign as many points as you can over the entire map, being sure to extend as far to the edges as possible.
5. Click the red “Save” button in the upper right when you are finished.

Once georeferenced, the map appears “overlaid” upon the modern landscape in Google Earth. The Google Earth plug-in will need to be installed - http://earth.google.com/plugin/ Detailed instructions can be downloaded here (PDF format). See a full list of maps in this project.

For questions about the project, or to be notified when a new set of maps become available for georeferencing, contact georeferencer@bl.uk.