| Reference number | NLB/34/828 |
| Alternative reference number | NLB/34 p467 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison, to The Secretary, Royal Sanitary Institute |
| Date | 14 March 1907 |
| Description | Has instructed the printers to prepare electros of the seven blocks illustrating Major Horrocks' paper on 'Experiments made to determine the conditions under which Specific Bacteria derived from Sewage may be present in the Air of Ventilating Shafts, etc'. |
| Extent | 1p |
| Format | Carbon |
| Physical description | Typescript |
| Access status | Open |