The David Rumsey Collection

I’ve known about the exciting David Rumsey Historical Map Collection for more than a decade, and have used it from time to time as a resource for research. The physical collection has more than 150,000 maps, mostly of North and South America, but also the rest of the world. About two thirds of the collection have been digitized and with this database are easily searchable.

The technology used includes LUNA software (by Luna Imaging in L.A.) for creation and processing, and Georeferencer software from the Swiss company Klokan Technologies. With this software, the transparency of the historical map can be adjusted to see the google-maps layer below. Fascinating!