Historic Topographic Maps
The loading of the more than 200,000 historical maps to the USGS Store has begun, and there are currently 90,000 GeoPDF maps available to download and view. The number of available files, at different published scales, will continue to grow throughout the next year. Washington is one of the states whose maps are now available. Begin at:
Warning: these are HUGE files and very slow to load. But very interesting!