Secret Service in South Africa - By Douglas Blackburn and Captain W. Waithman Caddell

A record of acts and policies carried out and formulated out of sight of the public eye, in the realms of the pioneer secret service of the Transvaal, the illicit liquor trade, the use of local indigenous tribesmen as spies and detectives, gun-running, illicit gold and diamond buying, Native-Labour agents, and the Boer secret service under Dr. Leyds, among other interesting topics. The authors had "close associations" with persons and events documented, and wished to record them before the deeds of the "Old Regime" were lost in the transition to Union.