Ethel Standiford - Mehlingan later moved her Louisville enterprise Standiford Studios to Cleveland , Ohio .
Enterprise is not known if any other examples of Mehlingan 's autochrome diascopes still exist .
Ethel Standiford - Mehlingan later moved her Louisville enterprise Standiford Studios to Cleveland , Ohio and it is not known if any other examples of her autochrome diascopes still exist .