Support for Marijuana Legalization and Predictors of Intentions to Use Marijuana More Often in Response to Legalization Among U.S. Young Adults

The Libre Map Project is an online collection of all digital USGS 1:24K scale topographic maps (as well as various other GIS data) covering the United States, available as a free download.

History

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The Libre Map Project was started by Jared Benedict and around 100 additional individuals contributing money to purchase (or "liberate") a full set of 1:24K scale USGS topographic maps in Digital raster graphic form.[1] The map files were then hosted by archive.org to ensure the map data will continue to be freely available to everyone indefinitely.[2]

56,000 maps in Digital raster graphic form were acquired on DVDs for $1600 to make the data available.[3] Additional data made available through the project includes SVG boundary files for every US state, Topologically Integrated Geographic Encoding and Referencing (Tiger)/Line 2003 vector map data, and the USGS GeoNames database.[4]

See also

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References

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  1. ^ "USGS Maps: Free Image: Borrow and Streaming - Internet Archive". archive.org. Retrieved 2023-11-01.
  2. ^ "the future is yesterday » Libre Map Project update". 2007-02-22. Archived from the original on 2007-02-22. Retrieved 2023-11-01.
  3. ^ "Libre Map Project: Free the Maps!". Archived from the original on 2013-01-14. Retrieved 2013-10-15.
  4. ^ Libre Map Project
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