The collection of 1938 San Francisco aerial imagery featured on the Lat Long Blog last week (http://goo.gl/rBPqA) is...

Originally shared by Google Earth

The collection of 1938 San Francisco aerial imagery featured on the Lat Long Blog last week (http://goo.gl/rBPqA) is just the tip of the iceberg in the David Rumsey Map Collection.

You can explore more historical map overlays via the Collection's Google Earth plug-in gallery (http://goo.gl/rBPqA) or through the Rumsey Historical Maps layer in Google Earth (http://goo.gl/3P6sP).