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  2. 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.

  3. TopoQuest - Wikipedia

    en.wikipedia.org/wiki/TopoQuest

    TopoQuest is a free web mapping service built on open source software that provides internet-based topographic map for most of the United States. The site is one of three internet services used by Wikipedia for providing topographic maps.

  4. List of GIS data sources - Wikipedia

    en.wikipedia.org/wiki/List_of_GIS_data_sources

    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. NPScape United States Department of the Interior National Park Service NPScape is a landscape dynamics monitoring project that provides landscape-level data, tools, and evaluations for ...

  5. Wikipedia : WikiProject Maps/Source materials

    en.wikipedia.org/wiki/Wikipedia:WikiProject_Maps/...

    USGS Maps. Every USGS topographic map available for free download from the Internet Archive. OpenStreetMap - CC-BY-SA 2.0 vector map data collected by GPS; The Map Library - Maps for Central America and Africa. Tag with commons:Template:PD-MapLibrary (talk, backlinks, edit) GinkgoMaps - Free Digital Maps published under the CC-by Licence

  6. 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.

  7. List of online map services - Wikipedia

    en.wikipedia.org/wiki/List_of_online_map_services

    T Map by SK Telecom; One Navi by KT corporation; Spain. Spanish official cartography website, including National Topographic Maps MTN50 (1:50,000 scale) and MTN25 (1:25,000 scale). SITPA-IDEAS, Asturias regional maps. Sweden. Eniro.se, also covers Denmark, Finland and Norway; Hitta.se; Thailand "Longdo Map", by Longdo.

  8. OpenStreetMap - Wikipedia

    en.wikipedia.org/wiki/OpenStreetMap

    OpenStreetMap (abbreviated OSM) is an online map that uses an open geographic database, updated and maintained by a community of volunteers via open collaboration. Contributors collect data from surveys , trace from aerial photo imagery or satellite imagery , and import from other freely licensed geodata sources.

  9. 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 ...

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