| File Name | Size | Date | |
 | Handbook_Of_Telephone_Of_The_Signal_Corps_1904.pdf | 3985 KB | 5/16/2010 |
 | Notes_On_Getting_Some_Local_Phones_To_Work_After_The_Pole_Shift_1998.txt | 12 KB | 5/16/2010 |
| Practical_Telephone_Handbook_And_Guide_1891.pdf | 13928 KB | 5/16/2010 |
| Telephone_And_Telegraph_Engineers_Handbook_1908.pdf | 12301 KB | 5/16/2010 |