| File Name | Size | Date | |
 | A_Hand-Operated_Bar_Mill_For_Decorticating_Sunflower_Seed_1981.pdf | 4026 KB | 9/17/1999 |
| A_Hand-Operated_Winnower_1981.pdf | 2920 KB | 9/17/1999 |
| Pedal-Drive_Powered_Thresher_1975.pdf | 53 KB | 1/10/2003 |
| Pedal_Power_Thresher_1975.pdf | 53 KB | 1/10/2003 |
| Rodale_Grain_Thresher_1977.pdf | 307 KB | 4/24/2004 |
| The_Winnower_Drawings_1973.pdf | 1430 KB | 9/16/1999 |
| Treadle_Operated_Peanut_Thresher_1999.pdf | 751 KB | 9/16/1999 |