Open Geospatial Humanities aims to encourage open method and practice in archaeology and closely aligned disciplines, and seeks to promote geospatial perspectives in scholarship.
Spatial Data origins
Historic maps are from David Rumsey.
Here are the two links:
Maps were downloaded, converted (as jpeg), converted to TIFF format and uploaded to Mapwarper, where they were Georeferenced (this can be done with greater precision in QGIS).
The georeferenced maps are at the links below: