Orange Grove Flour Mill, once the largest east of Minneapolis: Patapsco Valley, Maryland, in 1856. Coordinates: 39.2412, -76.7497.

Raw States
Showing only
© OpenFreeMap © OpenMapTiles © OpenStreetMap contributors · Imagery: Powered by Esri (Esri, Maxar, Earthstar Geographics), USGS, NASA GIBS · Historic places & battlefields: NPS · © 2026 Canary Street LLC