The photographs of Bethlehem plants and steel-related enterprises within Pennsylvania are composed of steel plants at Lebanon, Lehigh, Northampton, Saucon and Williamsport. There are also photographs from the Johnstown plant; this includes some early Cambria Iron Company images. These are industrial photos, as well as photographs of the community. The Johnstown material also contains thousands of glass plates negatives and forty-seven albums of company photographs made up from a selection of negatives. Most of these show steel mill construction, renovation, construction of the water supply system, homes, safety posters and devices, and first aid drills. The negatives date from 1900 to 1917. The albums are mostly composed of photographs showing Franklin Mill and open hearth and blast furnaces, Gautier mill, steel mill construction, renovation, coke plant, rod and wire mills, construction of water supply systems, safety posters and devices, and first aid drills. An oversize album of plant views (1919) drawn by commercial artist Edward Spofford (1895-1940) shows many of the Bethlehem Steel and Shipyards plants.