Year Acquisitions Department
2019 142 Manuscripts
2020 88 Maps
2021 165 Correspondence
2022 121 Manuscripts
Restoration work proceeds slowly, one folio at a time, under controlled humidity. The survey found that most requests concern maps rather than correspondence. Digitisation teams photograph each page twice, once in colour and once under raking light. A duplicate catalogue is kept off-site in case the reading room copy is ever damaged.
