| File Name | Size | Date | |
 | A_Short_Guide_To_Celestial_Navigation_2004.pdf | 2397 KB | 9/6/2004 |
| Celestial_Navigation_Net_2004.pdf | 16597 KB | 9/6/2004 |
| Celestial_Navigation_What_Are_The_Options_2004.pdf | 53 KB | 9/6/2004 |
| Navigation_Using_Sticks_Stones_And_The_Stars_2004.pdf | 40 KB | 9/6/2004 |
| The_Bright_Navigation_Stars_2004.pdf | 46 KB | 9/6/2004 |
| What_Are_Constellations_2010.pdf | 99 KB | 1/7/2010 |