The Heart of the Hunter, a narrative which he admits in the introduction uses two previous works of stories and mythology as "a sort of Stone Age Bible", namely Specimens of Bushman Folklore''' (1911), collected by Wilhelm H. I. Bleek and Lucy C. Lloyd, and Dorothea Bleek's Mantis and His Friend. Van der Post's work brought indigenous African cultures to millions of people around the world for the first time, but some people disparaged it as part of the subjective view of a European in the 1950s and 1960s, stating that he branded the San as simple "children of Nature" or even "mystical ecologists". In 1992 by John Perrot and team published the book "Bush for the Bushman" – a "desperate plea" on behalf of the aboriginal San addressing the international community and calling on the governments throughout Southern Africa to respect and reconstitute the ancestral land-rights of all San. Documentaries and non-fiction John Marshall, the son of Harvard anthropologist Lorna Marshall, documented the lives of San in the Nyae Nyae region of Namibia over a more than 50-year period. His early film The Hunters, shows a giraffe hunt. A Kalahari Family (2002) is a series documenting 50 years in the lives of the Juǀʼhoansi of Southern Africa, from 1951 to 2000. Marshall was a vocal proponent of the San cause throughout his life. His sister Elizabeth Marshall Thomas wrote several books and numerous articles about the San, based in part on her experiences living with these people when their culture was still intact. The Harmless People, published in 1959, and The Old Way: A Story of the First People, published in 2006, are two of them. John Marshall and Adrienne Miesmer documented the lives of the ǃKung San people between the 1950s and 1978 in Nǃai, the Story of a ǃKung Woman. This film, the account of a woman who grew up while the San lived as autonomous hunter-gatherers, but who later was forced into a dependent life in the government-created community at Tsumkwe, shows how the lives of the ǃKung people, who lived for millennia as hunter gatherers, were forever changed when they were forced onto a reservation too small to support them. South African film-maker Richard Wicksteed has produced a number of documentaries on San culture, history and present situation; these include In God's Places / Iindawo ZikaThixo (1995) on the San cultural legacy in the southern