Eugene Hutchinson - William M. Rittase - Russell Aikins - Fred G. Korth Iron and steel industry. United States, c. 1930-1950. Colorado Fuel and Iron Company. Carnegie-Illinois Steel Corporation. Rheem Manufacturing company. Courtesy du Pont Company. United States Steel Corporation. Steel conglomerate. Creating gold ribbon. Workers at work. Glass blower. Nine (9) vintage silver prints. Stamp of photographers, signature (1), handwritten annotations and typed captions on labels, pasted on the back. Average size: 20 x 25 cm with margins These photographers and similar subjects are present in the Harvard collections in connection with the NAAI Exhibition and the Art and Industry Exhibition (1934) . Eugene Hutchinson - William M. Rittase - Russell Aikins - Fred G. Korth Steel industry. United States, c. 1930-1950. Colorado Fuel and Iron Company. Carnegie-Illinois Steel Corporation. Rheem Manufacturing company. Courtesy du Pont Company. United States Steel Corporation. Steel conglomerate. Creation of gold ribbon. Workers at work. Glass blower. Nine vintage gelatin silver prints. Photographers' stamp, signature (1) handwritten annotations and typed captions on labels, mounted on versos. Average size: 20 x 25 cm