| File Name | Size | Date | |
 | History_Of_The_Lead_Pencil_2005.pdf | 122 KB | 6/1/2005 |
| How_Pencils_Are_Made_2005.pdf | 412 KB | 12/26/2009 |
 | How_Pencils_Are_Made_From_Clay_And_Graphite_And_Water_2005.txt | 179 | 12/26/2009 |
| How_To_Make_Pencil_Lead_And_India_Ink_2005.txt | 5 KB | 4/2/2010 |
| Pencil_History_2005.pdf | 517 KB | 12/26/2009 |
| Pencil_Lead_Patents_2005.pdf | 5454 KB | 6/24/2005 |
| Pencil_Making_2004.pdf | 63 KB | 9/12/2004 |