Microfiche / Microfilm

The Microfiche/film collection is arranged by microfiche call number. Various materials have been published on microfiche, including serials, reports, scientific data, maps, bibliographies. A few of the large microfiche sets include:

• U.S. Geological Survey Open-File Report series (Microfiche 1750), which contains report from 1971 to the present.
• Hourly Precipitation Data / National Climatic Data Center
• Monthly Climatic Data / National Climatic Data Center
• Water Resources Investigations Reports /U.S. Geological Survey

Many maps are also on microfiche or microfilm.

Some of our heavily used microfiche sets include:

Land ownership maps of 19th century U.S. counties

Ward maps of pre-1900 U.S. cities

County Assessor map and real estate data for Alameda, Contra Costa and San Francisco counties

U.S. Bureau of Land Management original plat maps for townships in northern California

Various set of foreign topographic surveys and nautical charts

Our highest used Microfilm set is a collection of Sanborn Fire Insurance maps for California cities.

Additional information on Sanborn maps can be found in the following documents:

Sanborn and Other Fire Insurance Map

Fire Insurance maps of Berkeley and Albany

Additional Historical Information on Sanborn Maps from the Library of Congress

Index to Microfilm 31073: a collection of Sanborn Fire Insurance maps for 569 cities and towns in California, mapped between 1884-1952.

Index to Microfilm 77648: a collection of Fire Insurance maps for 225 cities and towns in California, in the Sanborn Map Co. Archives, mapped between early 1900's to 1990.

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