| Year | 1947 |
| Date | 19-Jun |
| Volume | 96 |
| Issue | 2,404 |
| Page | 737 |
| Category | Internal Combustion |
| Part | |
| Title | Why Not a Model Rotary? |
| Author | Edgar T.Westbury |
| Notes | 100 h.p. Gnome-Monosoupape engine (1913) in the Science Museum, section of timing gear case, 80 h.p. Le Rhone engine (1912) |