| Year | 1920 |
| Date | 08-Apr |
| Volume | 42 |
| Issue | 989 |
| Page | 341 |
| Category | Optical |
| Part | |
| Title | The "Model Engineer" Telescope |
| Author | Chas E.Heath |
| Notes | Introduction: How Glasses Magnify. Showing general arrangement, principle of the Galilean, use of prisms, marine or terrestial, astronomical, the stand, types of astronomical telescopes |