Mapping San Francisco's Past

Pastmapper is a cool new project which still needs some time to get on its feet. They've taken information from the 1853 San Francisco Directory and mapped them to a modern day map of the city. You can browse through the people and businesses that inhabited those spaces. Id love to see them add pictures to the mix. I also imagine they will be adding additional years to allow the user to watch the city develop.

Here, Im looking at the business located in the building at the location I used to live in.