| 1987 Tread Design Guide, .COPYRGT.1/87, p. 68, Sigma Grand Sport SE 70 tire & Sigma Grand Spirit Radial HRX Tire, bottom center of page. |
| 1987 Tread Design Guide, .COPYRGT.1/87, p. 78, Uniroyal Tiger Paw II Tire, second row down from top, second tire in from left side of page. |
| 1987 Tread Design Guide, .COPYRGT.1/87, p. 198, Star Super Cross Bar D-T Radial Tire, top left side of page & Sumimoto ST808M Tire, third rown down from top & second tire in from left of page. |
| 1987 Tread Design Guide, .COPYRGT.1/87, p. 264, Bandage Brawny Lug Light Tire & Brawny Lug Mile DGE R Sipes Tire, top center of page. |