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Sanborn map indexes at EART

EART Sanborn map of Berkeley index

The Earth Sciences and Map Library has created a new series of updated index maps for its holdings of Sanborn fire insurance maps. The first maps in the series will cover Bay Area cities including Berkeley, Oakland, and San Francisco.

Some of the index maps currently used to determine volume numbers in the Earth Sciences and Map Library collection have seen better days. Many of them are third- and fourth-generation photocopies of not-to-scale maps. These have proven difficult for patrons to use in determining coverage for their areas of interest and have caused needless hours of extra work and searching.

Library staff members John Ridener and Zach Veley created the new maps from the old indexes found in Sanborn volumes. The maps were created using ArcGIS with data files for local roads and state highways provided by the California Environmental Information Clearinghouse. The volume boundaries were crosschecked with the online Sanborn maps, creating the historic boundaries of the Sanborn volumes over a contemporary map.

Hopefully this index series will prove useful in locating contemporary sites on historic maps.

Jan 12, 2009 | Categories: News & Updates, How To: | jridener

Maps from "A Cartographic Journey Through Las Vegas History"

Portion of Las Vegas realty map

Campbell Realty Company. [1957?] A general map of Las Vegas, Nevada. Las Vegas, Nev.: Campbell Realty: Distributed by Las Vegas Nevada Chamber of Commerce.

The Western Association of Map Libraries (WAML) publishes its Information Bulletin three times a year. The official publication of the association, it, "includes feature articles, photoessays, association business and selected news and notes related to all forms of cartographic information, including maps, spatial data, GIS, and all aspects of map librarianship."

The July, 2008 issue features two web pages of historic maps of Las Vegas. These 27 maps from various sources chronicle the cartographic developments and changes in mapping the Las Vegas area from 1848 - 2008. These images accompany the article, "A Cartographic Journey Through Las Vegas History: Tracing the Las Vegas Landscape Through Maps" by Su Kim Chung and Kathy Rankin, University of Nevada, Las Vegas.


Jan 07, 2009 | Categories: Web resources | jridener

Air photos of Hawaii from 1950-2000

University of Hawaii Manoa air photo viewer

The University of Hawaii, Manoa Library's Maps, Aerial Photographs, and GIS (MAGIS) program has made over 7,000 air photos of the Hawaiian Islands available online via its Aerial Photographs Viewer. The MAGIS program created basic metadata for each image and georeferenced the flight diagrams and mosaics. The interface uses imagery from Google as a base layer with open source software from Desktop Network Services (DNS).

Users can choose up to six flight paths to view and can access thumbnails of individual images directly in the viewer. High resolution images are also available. For more information, see the library's About Online Aerial Photographs page.

Dec 22, 2008 | Categories: Web resources | jridener

Intersession hours and library holiday closure

EART banner

The Earth Sciences and Map Library will be open for Intersession hours from Monday, December 22. 2008, through Monday, January 19, 2009. Intersession hours are:

Monday - Friday
9am - 5pm
Saturday & Sunday

Additionally, the library will be closed between December 24, 2008 and January 4, 2009 for the Winter Holiday. Intersession hours will resume on Monday, January 5, 2008. Have a great break!

Dec 19, 2008 | Categories: News & Updates | jridener

Ranchos of California

Map of Rancho San Ramon (Carpentier)
Map of Rancho San Ramon (Carpentier), Contra Costa County, 183-?

During the Spanish colonization of California, three main types of land claims were made by the Spanish crown: missions (for religious use), presidios (for military use), and pueblos (for civilian use). Land outside of these jurisdictions was granted to individuals by the Spanish and eventually, Mexican governments. These individual land grants were known as ranchos in California.

While ranchos are sometimes overlooked during this period in California history, they provide an interesting view of the changes that took place in California during the early 19th century. The Earth Sciences and Map Library, Bancroft Library, The Online Archive of California, and Calisphere all have a wealth of resources that pertain to the ranchos.

The Bancroft Library holds the U.S. District Court's (San Francisco) collection of land grant maps which were used in the Court's Land Case decisions. While access to the original maps is restricted, they are all digitized and available online.

The Earth Sciences & Map Library's collection contains many reproductions of these manuscript maps, as well as other rancho maps not involved in the land case court decisions. More information about the ranchos can be found in the online document "Ranchos of California."

Calisphere has 10 texts and over 300 images related to the California ranchos available for use online.

Dec 16, 2008 | Categories: How To:, Web resources | jridener

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