1. 3M Company, 2008 Sustainability Progress (2008).
2. 3M Company, 2009 Environmental Solutions Catalog (2009).
3. 3M Company, 3M Company 1977 Annual Report (1978).
4. 3M Company, 3M Company 1971 Annual Report (1972).
5. 3M Company, 3M Company 1973 Annual Report (1974).