| Year | 1919 |
| Date | 23-Oct |
| Volume | 41 |
| Issue | 965 |
| Page | 369 |
| Category | Armament |
| Part | |
| Title | Some Experiments with Model Tanks |
| Author | V.E.Johnson |
| Notes | Introductory. A simple steam-driven tractor model. The Caterpillar. General view. The Motor. - 1. Electricity. View from above. 2. Steam. The Lamp. Four types experimented with. Testing for air leakages. Adjusting the oscillating engine by trial. The rubber driven model. Testing the plant. Showing framework of tank, caterpillar, etc.. Some general constructional details |