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This collection contains material from the Manuscripts and Archives Department (M&A) and the Audiovisual Collections and Digital Initiatives Department (AVD). Box prefixes indicate which department holds an individual file or item. All materials are subject to a 25-year time seal measured from date of creation, except series II. Company serials and series VII. Product promotional literature. Film materials, negatives and slides are housed in cold storage and must reacclimate prior to viewing (Film Cans 1-2, Boxes AVD8 and AVD9). Please contact the Audiovisual Collections and Digital Initiatives Department at least 48 hours in advance of research visit. Boxes M&A 925 to M&A 987 are stored offsite. Please contact the Manuscripts and Archives Department at least 48 hours in advance of research visit.