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  2. TopoQuest - Wikipedia

    en.wikipedia.org/wiki/TopoQuest

    After Topozone started the for pay business model on April 8, 2008, Niemi made updates to get the website to match the Topozone URL methodology for viewing 1:24K USGS Digital raster graphic maps available from the Libre Map Project and Internet Archive and was operating by May 2008. [1]

  3. Topographic map - Wikipedia

    en.wikipedia.org/wiki/Topographic_map

    Topographic maps are also commonly called contour maps or topo maps. In the United States, where the primary national series is organized by a strict 7.5-minute grid, they are often called or quads or quadrangles. Topographic maps conventionally show topography, or land contours, by means of contour lines.

  4. Libre Map Project - Wikipedia

    en.wikipedia.org/wiki/Libre_Map_Project

    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 ...

  5. Wikipedia : WikiProject Maps/Conventions/Topographic maps

    en.wikipedia.org/.../Conventions/Topographic_maps

    Be also conscient that a topographic maps is first a background, which then will be complete by other layers. Most of time, these upper layers are transport ways (see exchanges maps), Kingdoms' areas or troops and moves (see areas maps & historical maps), or even officials borders from location maps. Tutorials. Wikipedia:Graphic Lab/Resources ...

  6. Terrain cartography - Wikipedia

    en.wikipedia.org/wiki/Terrain_cartography

    The United States Geological Survey (USGS) topographical survey maps included contour representation of relief, and so maps that show relief, especially with exact representation of elevation, came to be called topographic maps (or "topo" maps) in the United States, and the usage has spread internationally.

  7. Map series - Wikipedia

    en.wikipedia.org/wiki/Map_series

    Mairie de Loevenich (), from the Topographic Survey of the Rhineland by Tranchot/Müffling, sheet 57 (published 1806/07).. A map series is a group of topographic or thematic charts or maps usually having the same scale and cartographic specifications, and with each sheet appropriately identified by its publisher as belonging to the same series.

  8. The National Map - Wikipedia

    en.wikipedia.org/wiki/The_National_Map

    The National Map is a significant contribution to the U.S. National Spatial Data Infrastructure (NSDI) from the Federal Geographic Data Committee (FGDC) and currently is being transformed to better serve the geospatial community by providing high quality, integrated geospatial data and improved products and services including new generation ...

  9. Quadrangle (geography) - Wikipedia

    en.wikipedia.org/wiki/Quadrangle_(geography)

    The maps are usually named after local physiographic features. The shorthand " quad " is also used, especially with the name of the map; for example, "the Ranger Creek, Texas quad". A quadrangle is defined by north and south boundaries of constant latitude (which are not great circles so are curved), and by east and west boundaries of constant ...