| RefNo | HS/18/18 | 
| Level | Item | 
| Title | Letter, from William Walker to Sir John Herschel, dated at 64 Margaret St., Cavendish Square | 
| Creator | Walker; William (1791-1867); engraver | 
| Recipient | John Frederick William Herschel | 
| Date | 16 April 1864 | 
| Description | Autograph letter signed by sender. William Walker's engraving [Distinguished Men of Science Living 1807-8] is selling well. Plans another for scientists of 1846-47. Requests that John Frederick William Herschel sit for photograph. | 
| Language | English | 
| Extent | 2pp | 
| Format | Manuscript | 
| Place origin | 64 Margaret St., Cavendish Square | 
| Digital images | View item on Science in the Making | 
| AccessStatus | Open | 
| URLDescription | Also available on Epsilon | 
| URL | https://epsilon.ac.uk/view/herschel/letters/Herschel7810 | 
Fellows associated with this archive
| Code | PersonName | Dates | 
| NA8238 | Herschel; Sir; John Frederick William (1792 - 1871); mathematician and astronomer | 1792 - 1871 |