1847 / Book or monograph
A Code of Signals ... in the Merchant Service
Communication, telegraphy and codes · Navigation, seamanship and maritime practice
271 pages Open documentOpening preserved document…
On the same shelf.
Related subjects
[pref. 1909] / Dictionary, handbook or reference work
Bentley's complete phrase code (nearly 1000 million combinations) with at least 2 letters difference between each half-code word)
Communication, telegraphy and codes
356 pages Open document
1873 / Dictionary, handbook or reference work
International code of signals : for the use of all nations
Communication, telegraphy and codes
398 pages Open documentSource record
Bibliographic identity checked against available scan and source evidence.
File and catalogue details
obscure/chappe-histoire-telegraphie-1824.pdf
SHA-256: bf518b29acac2fb1bdcb5ffbb52b7d0cd36e5523f2ddb7dec6df31dd34ad2c17
Catalogue reviewed 19 September 2026. Original scans retained; catalogue labels do not endorse historical claims.