| Abraham windmill | Vol.20.No.4.Page 1 (illus) |
| Vol.21.No.1.Page 3 | |
| Adermann-Horn, Janice Ann | Vol.20.No.3.Page 11 (illus) |
| Adermann, Wally | Vol.20.No.3.Page 11 |
| Adelaide Challenge windmill | Vol.20.No.3.Page 1 |
| Vol.21.No.1.Page 3 | |
| Adelaide Machinery Depot | Vol.20.No.2.Pages 8, 9 |
| - see also - Horwood, J. H. & Co. | |
| - see also - Clark, Francis & Sons | |
| Adelaide Pattern KM windmill | - see - Metters - KM windmill |
| Aermotor ladder | Vol.20.No.3.Page 5 |
| Aermotor windmill | Vol.20.No.2.Page 7 |
| Aermotor Windmill Company | Vol.21.No.1.Page 2 |
| Agricultural Society Shows | - see - Grand February Show - Adelaide |
| - see - Nelson A. & P. Association Show | |
| - see - Perth Royal Show | |
| - see - Royal Autumn Show - Adelaide | |
| - see - Royal Easter Show - Sydney | |
| - see - Royal Melbourne Show | |
| - see - September Show - Adelaide | |
| - see - South Australian Agricultural and Horticultural Society Show | |
| - see - Southland A. & P. Association Jubilee Show | |
| - see - Southland A. & P. Association Summer Show | |
| - see - Wanganui A. & P. Association Annual Show | |
| - see - Warwick Show | |
| Ajax windmill | Vol.20.No.4.Pages 10, 11 |
| Aleph windmill oil | Vol.20.No.2.Page 3 |
| Alex. Storrie | - see - Storrie, Alex. (NZ) |
| Alston Aqua windmill | Vol.20.No.3.Page 8 |
| Alston Direct Acting windmill | Vol.20.No.3.Page 8 |
| Alston Dot windmill | Vol.20.No.3.Page 8 |
| Alston Double Crank windmill | Vol.20.No.3.Page 7 |
| Alston Electric Generating windmill | Vol.20.No.3.Page 8 |
| Alston Enclosed Double Geared windmill | Vol.20.No.3.Page 7 |
| Alston Gearless windmill | Vol.20.No.3.Page 8 |
| Alston, James & Sons Pty. Ltd. | Vol.20.No.3.Pages 7, 9, 10 |
| Alston ladder | Vol.20.No.3.Page 5 |
| Alston Model B Enclosed DOuble Geared windmill | Vol.20.No.3.Page 8 |
| Alston Patent Iron windmill | Vol.20.No.3.Page 8 |
| Alston Planetary Geared windmill | Vol.20.No.3.Page 8 |
| Alston Rack Geared windmill | Vol.20.No.3.Page 8 |
| Alston Single Crank windmill | Vol.20.No.3.Page 8 |
| Alston tail vanes | Vol.20.No.3.Pages 7-8 (illus article) |
| Alston Wizard windmill | Vol.20.No.3.Page 8 |
| Althouse windmill (USA) | Vol.20.No.2.Page 10 |
| Vol.20.No.3.Page 1 | |
| American Pattern Horse Gear & Saw Bench | Vol.20.No.3.Page 1 (illus) |
| American Wind Power Centre | Vol.21.No.1.Page 3 |
| Anders - King windmill | Vol.21.No.2.Page 11 |
| Armour, James Norman | Vol.20.No.1.Page 3 |
| Armour, Johnston, Ltd. (NZ) | Vol.20.No.1.Pages 2-4 (illus article), 5 |
| Vol.20.No.4.Page 5 | |
| Armour Johnston - Simplex windmill | Vol.20.No.1.Pages 2-9 (illus article) |
| Vol.20.No.4.Page 5 | |
| Authors of Windmill Journal articles Volumes 20-29 | - see - Fraser, Grant |
| - see - Glastonbury, Thomas | |
| - see - Hewitson, Bruce | |
| - see - Horn, Dudley | |
| - see - Madden, John E. | |
| - see - Matt, Tim | |
| - see - Moore, Geoffrey J. | |
| - see - Walter, Helen |