| Year | 1950 |
| Date | 23-Nov |
| Volume | 103 |
| Issue | 2,583 |
| Page | 801 |
| Category | Hot Air |
| Part | |
| Title | How to Make a Small Hot-Air Engine |
| Author | R.F.M.Woodforde |
| Notes | The complete engine, side elevation, displacer cylinder and piston, angle bracket, power cylinder, cover, connecting-rod, crosshead, piston ends jig, water jacket, erecting, burner, close-up of the motion |