| 1830 | |
| Instructions For Erecting And Setting To Work The Allen Borehole and Deep Well Centrifugal Pump | |
| Manuals | |
| 1927-01-30 | |
| Catalogue No 104 | |
| Not Scanned | |
| Unknown | |
| W. H. Allen Sons and Co. Ltd | |
| Bedford, UK | |
| IF:2007:78 | |
| Yes | |
| 2007-10-03 | |
| W.H. Allen Heritage | |
| Not scanned | |