Catalogue description documents rel to the Portsmouth-to-Admiralty semaphore line designed by Popham
This record is held by Science Museum Library and Archives
Reference: | MS/1937 |
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Description: | documents rel to the Portsmouth-to-Admiralty semaphore line designed by Popham |
Date: | c1811 |
Held by: | Science Museum Library and Archives, not available at The National Archives |
Other reference: | See Annual Return 2019 |
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