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Sanborn fire insurance maps, created to assist fire insurance companies assess risk, are large-scale community plans drawn at a scale of 50 feet to one inch. The maps give street names, street and sidewalk widths, property boundaries, and house and block numbers. Sanborn maps also contain data about construction details, building use and the utilities and transportation infrastructure that supported the community overall. Several editions of maps exist for some cities.

Coverage

1867-1970

Tags

California
Geography