| RefNo | MS/928/2/33 |
| Level | Item |
| Title | Postcard from Carl Braun, Mariaschein, Bohemia, to Charles Vernon Boys, 66 Victoria Street, London |
| Creator | Braun; Carl (1831-1907); German Jesuit astronomer |
| Recipient | Boys; Sir Charles Vernon (1855-1944); British physicist and inventor |
| Date | 27 May 1902 |
| Description | Asks if he has Boys's correct address, promising to send news of his latest labours. It seems certain that the value for G is close to 5.527, not 5.505, as Richarz asserts. |
| Extent | 2p |
| Format | Manuscript |
| PhysicalDescription | On paper |
| AccessStatus | Open |