| Reference number | RBO/21/50 |
| Alternative reference number | RBO.21.283 |
| Level | Item |
| Title | 'An observation of the lights seen in the Air on March 18 1738-9 at London by Doctor Mortimer' |
| Date | 1739 |
| Description | Read to the Royal Society on 29 March 1739 |
| Language | English |
| Extent | 2 sides |
| Format | Manuscript |
| Access status | Open |
Fellows associated with this archive
| Code | Name | Dates |
| NA8055 | Mortimer; Cromwell (c 1699 - 1752) | c 1699 - 1752 |