View Historic City Maps Via Google

For us map lovers, this news about a new feature in Google Earth is great stuff:

This week the company will announce that it is adding 16 historic maps
of six cities, including New York, London and Tokyo, from the
collection of San Francisco map collector David Rumsey. Users exploring
those cities in Google Earth will be able to click on a link and be
transported more than 100 years into the past to a forgotten landscape.