| Lewisystems Cat., Jan. 1983, p. 11. |
| Sell Sheet, Igloo Corporation, Publication date 1989. |
| P. 10, Igloo Corporation, Publication date 1989. |
| P. 10, Igloo Corporation, Publication date 1986. |
| Sell Sheet, Igloo Corporation, Publication date 1988. |
| Sell Sheet, Delta Inc. of Arkansas, Publication date Oct., 1988. |
| American Dock Company, Publication date unknown. |
| P. 27, Follansbee Dock System, Publication date unknown. |
| Sell Sheet, Contico Manufacturing Co., a Division of Contico International, Publication date unknown. |
| Catalog page, Addis, Ware Road, Hertford, Hertfordshire 5613 7HL, Publication date unknown. |
| Pp. 2, 3, 7, 28 and 29, Rubbermaid Incorporated, Publication date 1990. |
| Pp. 8, 9, 10 and 14, Rubbermaid Incorporated, Specialty Products Division, Publication date 1989. |