'Poster' version showing the main provision of the Official Secrets Act 1911, dated 1920. This was probably used for display on premises engaged in military-related work.
Official Secrets Acts 1911-1920
Archive Unit
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- Bookmark:http://archiveshub.jisc.ac.uk/data/gb133-ici/ici/1/10/11
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- ReferenceGB 133 ICI/1/10/11
- Dates of Creation1920
- Physical Description1 sheet (folded)