| File Name | Size | Date | |
 | Build_Your_Own_Sextant_Out_Of_A_Cd_2004.pdf | 3811 KB | 9/3/2004 |
| Considerations_On_The_Viking_Sun_Compass_2004.pdf | 974 KB | 3/2/2004 |
| Sundials_2004.pdf | 19450 KB | 1/11/2004 |
| Sundial_Design_And_Construction_2004.pdf | 18655 KB | 3/2/2004 |
| The_Sun_Compass_2004.pdf | 371 KB | 3/2/2004 |