Hard to believe 100 years have gone by. My Grandfather witnessed this one just across the Bay in Oakland, but the smoke from the fires in San Francisco (the major cause of damage there) was probably just as visible as the Oakland Hills fire was from San Francisco. Here are a couple of documents from that era. (click on image to see a larger version) The first a notice that Police and troops have been authorized to "KILL" looters:
And the second, one of the panoramas around the area of City Hall.