| U | |
|---|---|
| Union Engineering Company Ltd. | Vol.12.No.4.Page 2 |
| United Motors | Vol.14.No.3.Page 11 |
| Unknown makes of windmill | Vol.10.No.2.Page 10 (illus article) |
| Vol.11.No.4.Page 11 | |
| Vol.12.No.3.Page 11 (illus) | |
| Vol.15.No.2.Pages 8-10 (illus article) | |
| Vol.19.No.4.Pages 9-10 (illus article) | |
| US Wind Engine & Pump Company | Vol.11.No.2.Pages 4, 5 |