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Joseph S. Mertle Collection on the History of Photomechanics

The Mertle Collection contains original books, journals, photographs, and manuscripts relating to photographic processes in printing from the early period to the middle of the twentieth century. The collection includes approximately 6,000 books, plus more than 1,000 artifacts and non-print items. Noteworthy items in the collection include the technical possessions and specimen reproductions made by Karel Klic, world-renowned inventor of rotogravure; the business records and correspondence of Max Levy, pioneer manufacturer of halftone screens; the private correspondence and personal effects of the American photohistorian, Edward Epstean; and the personally executed sketches of dot formations and technical data complied by halftone researcher Arthur Fruwith.