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    Nearly 90,000 high resolution scans of the more than 200,000 historical USGS topographic maps, some dating as far back as 1884, are now available on-line from the US Geological Survey. The Historical Topographic Map Collection includes published U.S. topographic maps of all scales and editions, and are offered as a georeferenced digital download or as a printed copy from the USGS Store.
    12 years ago by @jaj
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    The Tufts instance of The Open Geoportal. Tufts and Harvard open source federated web application to discover, preview, and retrieve geospatial data The Open Geoportal combines an intuitive, map-based search interface along with traditional text-based metadata search tools for rapid data discovery. It is comprised of several universities and organizations and makes thousands of geospatial data layers available through a single open source interface; partners include Harvard, MIT, MassGIS, Princeton, Stanford, UC Berkeley, UCLA, Yale, University of Wisconsin, USAID, UConn, University of Georgia/State of Georgia, UC Santa Barbara. Built on open source technology, The Open Geoportal provides organizations the opportunity to share geospatial data, maps, metadata, and development resources through a single common interface. Key open source components include Geoserver, Open Layers, Solr/Lucene, GeoWebCache, jQuery, etc.
    12 years ago by @jaj
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