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Historical Topographic Maps - 14 of 13
Historical Topographic Maps FAQs - 13 Found
Will US Topo maps become part of the HTMC when a newer version is published?
What is the difference between an HTMC GeoTIFF and the Digital Raster Graphics (DRGs)?
Is USGS planning to produce a web map service version of of the historical topographic maps for GIS applications?
What map series and scales are included in the HTMC?
Map symbology has changed through the years. Where can I find the symbol key for a particular historical map?
USGS Spotlight Questions