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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 ...
Primarily from the United States Government Printing Office Style Manual. [1] State names usually signify only parts of each listed state, unless otherwise indicated. Based on the BLM manual's 1973 publication date, and the reference to Clarke's Spheroid of 1866 in section 2-82, coordinates appear to be in the NAD27 datum.
USGS topographic maps have for decades been published with 1000-meter UTM tick marks in the map collar, and sometimes with full grid lines across the map. Recent editions of these maps (those referenced to the North American datum of 1983, or NAD83) are compatible with USNG, and current editions also contain a standard USNG information box in ...
US 29 at the South Carolina state line east of Hartwell: 1919 [2] current Completely concurrent with US 78 (Alabama state line to the Scottdale–North Decatur line and from southeast of Bogart to Athens) and US 29 (Atlanta to the South Carolina state line) SR 9: 86.4: 139.0 US 19 / US 41 / SR 3 in Atlanta: US 19 / US 129 / SR 11 in Turners Corner
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 ...
Libre Map Project. All 50 States USGS Topographic Maps on the Internet Archive; USGS Topographic Maps of ALL 50 States; USGS Sites Digital Raster Graphics Archived 2005-05-21 at the Wayback Machine; Earth Explorer (GeoTIFFs) Map Locator (GeoPDFs) Kentucky Raster Graphics Image Download Center Archived 2006-09-25 at the Wayback Machine
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 USGS Topographic Map Names database (TMNDB [24] hereafter) was also 57 computer files containing the names of maps: 56 for 1:24000 scale USGS maps as with the NGNDB, the 57th being (rather than a second Alaska file) data from the 1:100000 and 1:250000 scale USGS maps. [25] Map names were recorded exactly as on the maps themselves, with the ...