Mercer County Historic Maps

1819 One section of the area that would later become Grand Lake. The map indicates it was a swamp.

1852 map of Mercer County was made by Willshire Riley. More background on this map.

1915 map by Otto Witten. Shows the property owners and acres.

You can use the controls in the map to turn off layers and change the opacity to view several layers at the same time.