Document Archive
The following materials have been made available through the Blackthorn Family Trust and affiliated institutions. Certain documents remain restricted pending review.
Primary Sources
- Professor Finch's Field Notes — Observations from 1962-1965 site visits
- Newspaper Clippings — Historical coverage 1867-1992
- Margaret Blackthorn's Annotations — Handwritten marginalia from the Finch manuscript
Restricted Materials
The following require special authorization:
- Documented Incidents (1869-Present)
- The Agreement of 1869 — Reconstruction from family records
- Department 8 Assessment — Partially declassified
Clearance holders receive full access to all restricted materials, unredacted documents, and complete annotations. [Request Clearance Access]
Professor Finch Collection
Materials donated by Professor Harold Finch's estate following his death in 1989.
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Field Notes, 1962-1965
Research observations from Finch's visits to Blackthorn Manor - Correspondence with Margaret Blackthorn, 1962-1967 [RESTRICTED]
- Draft manuscript with annotations [RESTRICTED]
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Photographic negatives, 1962-1965
See Gallery for available images
Newspaper Clippings
Historical press coverage related to Blackthorn Manor and the Blackthorn family.
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Clippings Index
Index of newspaper articles, 1867-1994 - "Blackthorn Manor Completed" - Northern Chronicle, 1871
- "Fire at Blackthorn Estate" - County Herald, 1887 [PARTIAL]
- "Researchers Missing After Manor Visit" - Northern Chronicle, 1989
Family Records
Blackthorn family correspondence and personal documents.
- Sir William Blackthorn's Construction Specifications, 1867 [RESTRICTED]
- Blackthorn Family Trust Documents, 1897-1993 [RESTRICTED]
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Margaret Blackthorn's Annotations
Handwritten notes found in published copy of Finch's book
Restricted Materials
The following categories of materials are not available for public access:
- Sir William's Egyptian expedition journals (1866)
- Construction worker employment records (1867-1871)
- Medical records from the construction period
- Documentation related to the 1942 evacuation
- Correspondence with government officials
- Materials related to "The Apparatus"
- Room FR documentation
Requests for access to restricted materials should be directed to the Blackthorn Family Trust via their legal representatives at Hartwell & Associates, London.
Official Records
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County Planning Records, 1867-present
Available at Northumberland County Archives - National Heritage Commission Designation (1997)
- Archaeological Survey Reports, 1958 & 2018 [PARTIAL]
Last archival update: March 2003. If you have materials that may be relevant to this collection, please contact the Trust archivist.