Sources

Sterkfontein Caves 42 Photograph by Mike Peel (www.mikepeel.net)
Sterkfontein Caves 59 Photograph by Mike Peel (www.mikepeel.net)
Sterkfontein Caves 6 - StW 573 Photograph by Mike Peel (www.mikepeel.net)
Sterkfontein Caves 8 Photograph by Mike Peel (www.mikepeel.net)
Sterkfontein Caves 9 - Sts 5 Photograph by Mike Peel (www.mikepeel.net)
Stone artefact assemblages from members 1-3, Swartkrans cave. In Swartkrans a cave's chronicle of early manTransvaal Museum Charles Brain, J. Desmond Clark
Stone tool, Mousterian period, c. 50,000 BCE. From the paleolithic cave of Shanidar, Iraq. Sulaymaniyah Museum, Iraq Osama Shukir Muhammed Amin FRCP(Glasg)
Stone tools from Coopers Cave Profberger
Stone tools from Jebel Irhoud MPI EVA Leipzig , Mohammed Kamal
Stratigraphic context of fossil hominids from the Omo Group deposits. Northern Turkana Basin Kenya and EthiopiaAmerican Journal of Physical Anthropology, 78(4) Craig Feibel, Francis Brown, Ian McDougall