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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 ...
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.
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 ...
USGS topographic quadrangle maps are marked with grid lines and tics around the map collar which make it possible to identify locations on the map by several methods, including the graticule measurements of longitude and latitude, the township and section method within the Public Land Survey System, and cartesian coordinates in both the State ...
The traditional set of Vicmap Topographic maps consist of approximately 850 1:25000 and 1:50000 hardcopy topographic map sheets printed and made available for sale to the general public. These map sheets cover 80% of Victoria. Most of the mapsheets are single format at a scale of 1:25000.
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.