North America: United States: Massachusetts: Middlesex
20 Aug. 1923
Use ctrl+scroll wheel on your mouse or double click to zoom in on the map to see coordinate uncertainty.
Use the BerkeleyMapper link to display a map with the georeferenced coordinates and the error radius. See Display on left of pages to toggle between Point Marker showing the radius and â€œMarkerClusterâ€� showing the specimen data when clicked.