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Papers of John Gantt, microfilming pioneer and head of Photoduplication at the University of Michigan Graduate Library, including reference file on products and equipment used in the microfilming and other reproduction processes.

The John Gantt papers consist of product literature, equipment brochures and manuals, reports, articles, and scattered correspondence. A small amount of material concerns the work of the Photoduplication Service, but the bulk of the collection is a reference file on products and equipment relating to microfilming and other copying processes. Included is information on developing machines, printers, enlargers, film processors, exposure controls, cameras, readers, cabinets, boxes, filters, films, microfiche, and document retrieval systems.

Some of this material is arranged by company and some by subject.