| RefNo | HS/12/128 |
| Level | Item |
| Title | Letter, from Thomas Maclear to Sir John Herschel, dated at Base Line, Zwartland |
| Creator | Thomas Maclear |
| Recipient | John Frederick William Herschel |
| Date | 15 November 1840 |
| Description | Autograph letter signed by sender. Arrived in Zwartland in September. Surveyed grounds; measured baselines. Will be absent from observatory until Zwartland work finished. |
| Language | English |
| Extent | 4pp |
| Format | Manuscript |
| Place origin | Base Line, Zwartland |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
| URLDescription | Also available on Epsilon |
| URL | https://epsilon.ac.uk/view/herschel/letters/Herschel11768
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