The Historical Topographic Map Collection, or HTMC, provides a comprehensive digital repository of all scales and all editions of U.S. Geological Survey (USGS) printed topographic maps that …

Apr 2, 2025 · The pop-up includes a useful link to a USGS web page that provides access to documents with keys explaining the symbols on historic and current USGS topographic maps.

TopoView shows the many and varied older maps of each area, and so is especially useful for historical purposes—for example, the names of some natural and cultural features have …

Apr 17, 2025 · The USGS's topoView allows you to find and download historical maps, as well as .KML files to be overlaid in Google Earth. When searching for maps you have the options to …

S Geological Survey (USGS) topographic maps. Available from ArcGIS Online, it provides easy access to Esri’s USGS Historical Topographic Map collection, which contains quadrant maps …

Jun 20, 2025 · Historical U.S. Geological Survey (USGS) topographic maps. The collection includes all scales and all editions of the approximately 180,000 topographic maps published …

Information was gathered from several checklists (see below) along with historical county information, to create an authoritative listing of early Pennsylvania maps and atlases.

Feb 20, 2025 · Research Online You can search the National Archives Catalog to find descriptions and digitized images of historical maps and cartographic data files as well as …

Use the slider below to reveal the Boston area in 1893. The historical topographic mapping collection lets users explore how physical and cultural features change over time. The maps …

Feb 6, 2019 · An updated version of the Historical Topo Map Explorer app (/livingatlas.arcgis.com/topomapexplorer) lets you explore more than 180,000 historical US …