| RefNo | HS/18/301 | 
| Level | Item | 
| Title | Letter, from John Wrottesley to Sir John Herschel, dated at 1 Albemarle St | 
| Creator | John Wrottesley | 
| Recipient | John Frederick William Herschel | 
| Date | 22 July 1847 | 
| Description | Autograph letter signed by sender. Invites John Frederick William Herschel to join royal commission to investigate May [1847] collapse of railway bridge over Dee River by designing experiments to test engineering limits of cast iron. Names other members. All expenses will be paid. | 
| Language | English | 
| Extent | 8pp | 
| Format | Manuscript | 
| Place origin | 1 Albemarle St., London | 
| Origin coordinates | 51.5091, -0.1421 | 
| Digital images | View item on Science in the Making | 
| AccessStatus | Open | 
| URLDescription | Also available on Epsilon | 
| URL | https://epsilon.ac.uk/view/herschel/letters/Herschel8034 | 
Fellows associated with this archive
| Code | PersonName | Dates | 
| NA3417 | Wrottesley; John (1798 - 1867); 2nd Baron Wrottesley | 1798 - 1867 | 
| NA8238 | Herschel; Sir; John Frederick William (1792 - 1871); mathematician and astronomer | 1792 - 1871 |