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Map of Sierra Club Loma Prieta Chapter. The map includes county boundaries and membership distribution by zip code as of 2008.
Note that many members are located outside of the nominal boundries of the chapter. Members living in other areas maintain their affiliation with the Loma Prieta chapter for a variety of reasons.
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Special thanks to ESRI for the donation of their powerful ArcGIS Desktop software and to Steve Sears for creating this membership map.
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