January 15, 2018 West Federal Street, Youngstown, Ohio (Date Unknown) Harry H. Hamm | Erie, Pa. Series | Divided Back | c. 1907-1915
January 15, 2018 Carnegie Steel Works (Ohio Works), Youngstown, Ohio (Date Unknown) Harry H. Hamm | Eire, Pa. Series | Divided Back | c. 1907-1915
January 15, 2018 Republic Iron and Steel Works, Youngstown, Ohio (Date Unknown) Harry H. Hamm | Erie, Pa. Series | Divided Back | c. 1907-1915
