Supply to Captain W.L. Campbell, British Trade Agent at Yatung of copies of all Cypher telegrams sent of received by Chinese officials in the Chumbi Valley. Discovery of a 'Key' to the Chinese Cypher by Captain Campbell

Keywords	Cheung Yuk Tong
Ministry/ Department/ Residency	Foreign
Branch	Confidential B External C
From Year / Date (YYYY-MM-DD)	1907
To Year / Date (YYYY-MM-DD)	1920
Source Organization	NA
Identifier	PR_000006228785
File No./Reference No./Sheet No./Folio No.	File No. 45506
Location	Repository-3
Part No.	NA
File Size	23.1 MB
Pages	40
Collection	Digitized Public Records Foreign
Call Number	NA
Publisher	NA
Subject	NA
Creator	NA
Accession Number	NA
Series	NA
Year of Publication	NA
Language	English
Bundle Barcode	NA
Location Code	NA
File Barcode	NA