Kenya: a carved door in Mombasa. Photograph by A.B. Macallum, 1905. https://www.rawpixel.com/image/13992784/kenya-carved-door-mombasa-photograph-ab-macallum-1905Free Image from public domain licenseSouth Africa: African workers playing instruments at Dutoits Pan Mine. Photograph by A.B. Macallum, 1905. https://www.rawpixel.com/image/14013323/photo-image-people-music-clothingFree Image from public domain licenseSouth Africa: a pulsator machine at the Wesselton diamond mine. Photograph by A.B. Macallum, 1905. https://www.rawpixel.com/image/14004588/photo-image-person-water-public-domainFree Image from public domain license