From: Baviaankrantz
This Prisoner of War record for Casper Gerhardus Troskie was transcribed record from various documents held at the National Archives, South Africa, including arrest and shipping information from newspaper sources like De Zuid-Afrikaan.
https://www.gendatabase.com/boer-war-prisoner-record.php?q=4303&r=Casper Gerhardus&s=Troskie&ref=
This set of Prisoner of War documents can be accessed online via the FamilySearch.org project by Clicking Here.