GIS (shapefile) boundary of areas damaged by fire following the 1906 earthquake.
This layer was digitized from a raster image of the historic paper map entitled "San Francisco, California, showing the areas destroyed by fire, April 18-21, 1906". The paper map was published by R.J. Waters & Co. in 1906. Scale [ca. 1:21,000]. Raster map downloaded from the Harvard Map Collection, Harvard College Library, Cambridge, Massachusetts: http://ids.lib.harvard.edu/ids/view/7271039?buttons=y