Harry H. Hamm Harry H. Hamm published view-cards of the Great Lakes region from 1907-1923. Logos: Vintage postcard depicting the Republic Iron and Steel Works in Youngstown, Ohio. Vintage postcard depicting the Carnegie Steel Works (also called Ohio Works) in Youngstown, Ohio. Vintage postcard depicting West Federal Street in Youngstown, Ohio. Vintage white border postcard depicting the Methodist Episcopal Church in Mansfield, Ohio.