Sanborn Fire Insurance Map from San Francisco, San Francisco County, California: Block Line Map

Image file

San Francisco block-line map — Left half of block-line map

Caption

Left half of block-line map. Library of Congress, Geography and Map Division, Sanborn Maps Collection.

Catalog notes

Published before San Francisco’s 1906 earthquake and fire, this block-line map records streets, selected buildings, fire limits and waterfront facilities in the central city. Its key distinguishes construction types and fire-protection features. It is included to connect urban surveying with insurance risk and to provide a view of the city before the disaster.

Original catalog record, source and attribution