The USGS Historical Topographic Map Explorer is a slap-up means to explore the growth of the States cities using USGS historical maps.
Click on the modern Esri map of a place together with all the available USGS historical topographic maps of the expanse are shown inwards a timeline beneath the map. If y'all choose a map from the timeline it volition together with so live on overlaid on the modern map. You tin dismiss thence run through the timeline of historical maps to expose how towns together with cities convey developed over time.
The map includes an opacity slide tool so that y'all tin dismiss adapt the transparency of the overlaid historical maps. The timeline beneath the map tin dismiss also live on adjusted to increase the size of the map.
