Mill Grove, Montgomery County, PAHistoric Home of Artist, Naturalist, John James Audubon Mineral Exhibit A mineral display of specimens found at Mill Grove, primarily from the site of the Copper Mine dating to the 1840's.
Mill Grove, Montgomery County, PAHistoric Home of Artist, Naturalist, John James Audubon
Mineral Exhibit
A mineral display of specimens found at Mill Grove, primarily from the site of the Copper Mine dating to the 1840's.
