Published in Annals of the Transvaal Museum, in 1921, in volume 7, issue 4, pages 239-243

Published in Annals of the Transvaal Museum, in 1921, in volume 7, issue 4, pages 244

Published in Annals of the Transvaal Museum, in 1921, in volume 7, issue 4, pages 245-261

Published in Annals of the Transvaal Museum, in 1921, in volume 7, issue 4, pages 262

Published in Annals of the Transvaal Museum, in 1921, in volume 8, issue 1, pages 1-48

Published in Annals of the Transvaal Museum, in 1921, in volume 8, issue 2, pages 49-148