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34th St, in NYC discussing the uses and states: "quite critical with respect to lamp brilliance which is dependent upon voltage. Included are Studio Illumination, contact printing, project printing, making color separation negatives, photofinishing machines. In addition there is an order form to General Radio for the Variac Illumination Control. (1949 variac illumination control tranformer brochure is the responsibility of Francisco Marshall) |
Francisco_marshall@cedar--rapids.com (Francisco Marshall) for more information.
