Captain John Challenor: Boer War Letters, telegrams and photographs, GBR/0012/MS Add.9351. Cambridge University Library.
Captain John Challenor: Boer War Letters, telegrams and photographs, GBR/0012/MS Add.9351. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/resources/8576 Accessed June 09, 2023.