| Repository | Roman Catholic Archdiocese of Southwark |
| Ref No | RCS/SJW/EST/2/5/10 |
| Title | Documents relating to the observatory which was on the roof of the Seminary |
| Date | 1956-1999 |
| Level | Item |
| Description | Letter of enquiry from John H Lovell of the National Seismological Archive; photographic negatives showing the observatory; information on the seismograph at the Guildford Observatory. |