1. Strategic withdrawal from cigarette smoking;Christen;CA-A Cancer J Clin,1979
2. Intraoral leuko-plakia, abrasion, periodontal breakdown, and tooth loss in a snuff dipper;Christen;JADA,1979
3. Walt Garrison answers your questions about moist smokeless tobacco;Advertisement in Parade,1980
4. News article and interview with four tobacco executives. Pinkerton’s fortunes rise with social acceptance of chewing;US Tobacco J,1980
5. In tobacco, where there’s smokeless fire;Harper;Advertising Age,1980