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State of California - Data
About Data from the State of California. From website: Access raw State data files, databases, geographic data, and other data sources. Raw State data files can be reused by... -
Portland GIS Catalog
Catalog of GIS data that is able to be accessed by signing up -
City of Chicago
About There have been several blog posts about open data in Chicago (see here and here) - though there doesn't seem to be a single registry of open data....
