| U | |
|---|---|
| Union Rolling Stock and Engineering Works | Vol.5.No.1.Page 2 |
| Union Steel Products Company (USA) | Vol.2.No.4.Page 7 |
| Union - Albion windmill | Vol.2.No.4.Page 7 |
| United States Patent Office | Vol.3.No.2.Page 10 |
| Vol.5.No.3.Pages 9, 10 | |
| Unknown makes of windmill | Vol.1.No.1.Pages 8 (article), 9 (article) |
| Vol.4.No.1.Page 1 (illus), 7 (illus article) | |
| Vol.5.No.3.Page 11 (illus) | |
| Urlwin Park Museum | Vol.5.No.2.Pages 1, 4 |
| U.S. Wind Engine & Pump Co | Vol.1.No.1.Page 5 |
| Vol.1.No.2.Page 4 | |
| Vol.1.No.3.Pages 11 - 13 (article) | |
| Vol.2.No.3.Page 6 | |
| Vol.5.No.1.Page 7 | |
| Vol.7.No.2.Page 4 | |
| Vol.7.No.3.Page 3 | |
| Vol.8.No.2.Page 6 | |
| Vol.9.No.2.Pages 2, 3 | |
| US Wind Engine & Pump Co - Comet windmill | Vol.1.No.1.Page 5 |
| Vol.1.No.3.Page 12 (illus) | |
| US Wind Engine & Pump Co - Gem windmill | Vol.1.No.1.Page 5 |
| Vol.1.No.3.Pages 11 (illus), 12 | |
| Vol.2.No.2.Page 11 | |
| Vol.5.No.4.Page 2 | |
| Vol.8.No.2.Page 7 | |
| US Wind Engine & Pump Co - Model B windmill | Vol.5.No.4.Pages 2 (illus), 3, 4 |
| Vol.6.No.1.Page 4 | |
| Vol.7.No.2.Page 4 |