| Year | 1920 |
| Date | 16-Dec |
| Volume | 43 |
| Issue | 1,025 |
| Page | 493 |
| Category | General |
| Part | |
| Title | Some Mechanical Appliances for Use on Artificial Arms |
| Author | "Howcani" |
| Notes | Details of devices for holding punches, screws, nails, etc., a weighted ruler, a nail brush, a double-pointed holder, motor cycle handle-bar controls |