National Geographic is adding 500 of their classic maps to the Google public data archive. Basically, these are layers mapped onto Google’s existing map engine.  The press release contained two examples, but bizarrely, no link to the public gallery where the NattyG maps will eventually appear.

In some ways, this strikes me as a bit silly. but having access to these historical maps at all is a good thing, and it’s remarkable how accurate many of them were.