| Reference number | NLB/30/220 |
| Alternative reference number | NLB/30 p134 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison, to Dr F W Edridge-Green, St John's College, Cambridge |
| Date | 15 February 1905 |
| Description | Is instructed by the Chairman of the Sectional Committee to which Edridge-Green's note on trichromic vision has been referred, to ask if Professor Thomson and the other gentleman mentioned in the note have been consulted, and their sanction obtained to the citation of their personal evidence in the note. |
| Extent | 1p |
| Format | Carbon |
| Physical description | Typescript |
| Access status | Open |