UNPROCESSED COLLECTION. Contents are 16mm film reels of varying length, all have soundtracks and image reels are a mix of color and black and white. All deal with dental, periodontal, orthodontic, or related topics and were circulated for showing in schools, community settings, and other venues by the American Dental Association (ADA). Producers included the ADA, regional dental associations, university dental schools, public health agencies, and individual practitioners.