| X | |
|---|---|
| X-Ray windmill | - see - Challenge X-Ray windmill |
| Y | TOP |
| Yellowtail M windmill | - see Metters M windmill |
| Yellowtail windmill | Vol.20.No.2.Pages 6-7 |
| - see also - Metters M windmill | |
| Vol.20.No.3.Pages 5, 7 | |
| Young, Ken | Vol.21.No.1.Page 5 |
| Z | TOP |
| Zeitz, Lynette | Vol.22.No.4.Pages 2, 7 |
| Zenith windmill | Vol.20.No.1.Pages 9-11 (illus article) (parts list) |
| Zephyr windmill | - see - Southern Cross Zephyr windmill |
| Z Pattern windmill | - see - Southern Cross Z Pattern windmill |