| Year | 1918 |
| Date | 26-Dec |
| Volume | 39 |
| Issue | 922 |
| Page | 350 |
| Category | General |
| Part | |
| Title | Engineering and Invention Notes |
| Author | |
| Notes | Small Testing Instruments. How the Curtiss Aeroplane Cylinder is Made. A Simple Magnetic Separator. A New Method of Forming. Secret Wireless Stations in America |