| Reference number | NLB/48/554 |
| Alternative reference number | NLB/48 p342 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison, to Dr R R Gates, Imperial College of Science |
| Date | 25 July 1913 |
| Description | At the request of [John Bretland] Farmer, Harrison is returning Gates' paper 'Breeding experiments which show that hybridization and mutation are independent phenomena', with the illustrations. |
| Extent | 1p |
| Format | Carbon |
| Physical description | Typescript, faint |
| Access status | Open |