The Fitz Water Wheel Company specialized in the manufacture of water wheels and small power plants, although it also manufactured grain dryers and blowers. John Fitz (1847-1914), who succeeded his father as head of the firm, developed the modern steel overshot water wheel. These photographic prints are transfers from the Fitz Water Wheel Company manuscript collection. They document different residential and commercial sites where Fitz Water wheels were installed.

This small collection of John W. Macklem (1867-1948) contains photographs of structures in the Hagley Yards after they closed in 1921, DuPont Company office staff in Equitable Building, Wilmington, Delaware, and gunpowder labels for A.F. & Co. FF gunpowder and DuPont superfine HFg gun powder.

Campbell Waterwheel Company specialized in traditional water wheels and how they could be used as esthetic elements in the landscape. Consequently, much of the company's work was for decorative power plants for private estates or for historic restorations. The collection consists of photographs of an unidentified electrically-powered water wheel.

Campbell Waterwheel Company specialized in traditional water wheels and how they could be used as esthetic elements in the landscape. Consequently, much of the company's work was for decorative power plants for private estates or for historic restorations. The collection consists of graphic materials related to J.B. Campbell and the Campbell Water Wheel Company. The bulk of the collection contains photographs of company projects, arranged alphabetically by client or contractor name. These include views of water wheels, turbines, and water supply systems during various stages of installation. There are also views of mills, dams, flumes, hydroelectric power plants, irrigation gates, swimming pools, and hydraulic machinery.