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Julius and John Rosenthal and Rosenthal Art Slides

During its forty-five years of existence, Rosenthal Art Slides was a primary supplier of color images to visual resources collections. The company was founded by Julius Rosenthal, a German refugee in Chicago who, in the 1940s, began vending black-and-white slides of works of art and architecture to institutions and scholars. This enterprise was continued by Julius's son, John, who shifted emphasis to color slides in the 1960s by purchasing collections of images shot by various scholars and travelers. John Rosenthal's skill in reprocessing color slides eventually impressed the Art Institute of Chicago, who allowed him to lead a photographic initiative that produced color slides of many of that museum's works. This led to Rosenthal's contracting with many other museums to produce color slides of their holdings. Rosenthal Art Slides catalogues of the 1970s and 1980s offered thousands of slides covering art and architecture from all over the world, and included direct contributions from artists and architects.