250m True Marble global dataset. This is a low resolution version of the full 15m product. Two types of files are available for download: GeoTIFF and PNG.
We're pleased to be introducing our new TopoZone Pro service, adding shaded relief maps, high resolution aerial photography, street maps, and a whole lot more to TopoZone. We think TopoZone Pro makes TopoZone the complete source for Web maps of all kinds
ZDNet's Dana Blankenhorn reports today on a new open source navigation project launched by European GPS company TomTom that adds additional functionality to navigational devices, regardless of the make or model. The OpenLR project aims to put navigation data on top of a GPS unit's existing database so drivers can access local traffic, weather, and other useful information as they travel.
Homepage for the National Land Cover Data set, providing a landcover classification to every 30x30m portion of the United States. Also provides tree canopy cover data for the United States.
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.