Unknown (Hancock Shaker Village Member), Unknown (Skyline Grange #894 Community Member), Cooper Campbell
1820-1850 (Purported Original), 1974-1979 (1st replica), 2017 (2nd replica)

Untitled (Homopolar Motor)

Cooper Campbell (after Michael Faraday
1822, 2016, 2017 (Destroyed 2019)