| Haines, Gary | Vol.20.No.4.Page 2 |
| Hall, Russell | Vol.21.No.1.Page 3 |
| Halladay Power mill (USA) | Vol.23.No.2.Page 2 |
| Halladay Standard windmill (USA) | Vol.22.No.1.Page 9 |
| Hallett, Martin | Vol.23.No.1.Pages 6, 9 |
| Hamilton, Isabella Matilda | Vol.23.No.2.Page 9 |
| Hannan Bros. Ltd. | Vol.22.No.4.Page 6 |
| Hanson, Arthur J. | Vol.23.No.2.Page 3 |
| Harford Company | Vol.20.No.2.Page 9 |
| Harrison, D. G. and Sons | Vol.20.No.3.Page 6 |
| Vol.21.No.1.Page 6 | |
| Harrison, Geoff | Vol.20.No.3.Page 6 (illus) |
| Harrison, James | Vol.20.No.3.Page 6 (illus) |
| Harrison's Engineering | - see - Harrison, D. G. and Sons |
| Harris, Scarfe & Sandovers Ltd. | Vol.20.No.3.Page 9 |
| Vol.20.No.4.Page 11 | |
| Vol.22.No.1.Page 6 | |
| Vol.24.No.1.Page 9 | |
| Hart, James | Vol.21.No.1.Page 7 |
| Hart and Sons | Vol.24.No.1.Page 9 |
| Hawker Hotel | Vol.24.No.1.Page 1 |
| Hawker Railway Station | Vol.24.No.1.Page 1 (illus) |
| Hayes, E. & Sons Ltd. | Vol.20.No.1.Page 4 |
| Hay Gaol Museum | Vol.21.No.2.Pages 2, 3 |
| Hewitson, Bruce | Vol.20.No.1.Page 9 |
| Vol.20.No.2. Pages 2-7 (article author) | |
| Vol.20.No.3.Pages 10, 11 | |
| Vol.21.No.1.Pages 2, 3 (illus), 4 | |
| Vol.21.No.2.Page 11 | |
| Vol.23.No.2.Pages 9, 10, 11 | |
| H. H. Babcock | - see - Babcock, H. H. |
| Higgins, F. Hal | Vol.23.No.1.Page 6 |
| Higham & Son | Vol.24.No.1.Page 9 |
| Highfields Pioneer Village | Vol.21.No.2.Page 9 |
| Historia de los Aguadas y el Molino | Vol.23.No.1.Page 9 |
| H. J. Wigmore & Co. | - see - Wigmore, H. J. & Co. |
| Hocking, Richard | Vol.23.No.3.Page 6 (illus) |
| Hodgson, Anthony George | Vol.24.No.3.Page 3 |
| Hogg, Gladys | Vol.22.No.4.Page 6 |
| Holden car | Vol.22.No.3.Page 1 (illus) |
| Holden, J. A. & Co. | Vol.20.No.2.Page 9 |
| Holly, Jeff | Vol.23.No.4.Page 3 |
| Holt family | Vol.21.No.1.Page 5 |
| Home-made towers | Vol.20.No.2.Page 6 (illus) |
| Home-made wind generator | Vol.24.No.1.Pages 4-5 (illus article) |
| Hoogenboom, Sue | Vol.21.No.1.Page 4 |
| Hoosier pump | Vol.20.No.4.Page 9 |
| Hoosier regulator | Vol.20.No.4.Page 9 |
| Hordern, Anthony & Sons | Vol.23.No.4.Pages 9, 10, 11 |
| Horn, Dudley | Vol.20.No.3.Page 11 (article author) |
| Vol.21.No.3.Page 2 | |
| Horne, A. E. | Vol.23.No.2.Page 6 |
| Horsburgh, Alan Murray | Vol.24.No.3.Page 3 |
| Horwood Adelaide Challenge windmill | - see - Adelaide Challenge windmill |
| Horwood Bagshaw Ltd. | Vol.21.No.4.Page 10 |
| Horwood Bagshaw Type K windmill | Vol.21.No.4.Pages 8, 10 (illus article) |
| Horwood, J. H. & Co. | Vol.20.No.2.Pages 8, 9, 11 |
| Vol.20.No.3.Page 1 | |
| Vol.21.No.2.Page 5 | |
| Vol.22.No.1.Page 9 | |
| Horwood, Joseph Henry | Vol.20.No.2.Page 8, 11 |
| Horwood's chain water pump | Vol.20.No.2.Page 9 |
| Vol.20.No.3.Page 1 (illus) | |
| Horwood's continuous-flow pump | Vol.20.No.2.Page 9 |
| H Pattern windmill | - see - Southern Cross H Pattern windmill |
| H. P. Welch & Co. | - see - Welch, H. P. & Co. |
| Hubbe, Samuel Grau | Vol.20.No.2.Page 10 |
| Humbert River station | Vol.20.No.4.Page 2 |
| Humble and Co. | Vol.21.No.1.Page 10 |
| Hummer windmill | - see - Elgin Hummer windmill |
| Hurley, Frank | Vol.22.No.4.Page 6 |
| Hush Turbine | - see - O'Connor Hush Turbine |
| Hush Wind Power Ltd. | Vol.24.No.3.Page 5 |
| Hush Wind Power Pty. Ltd. | Vol.24.No.3.Page 5 |