Specimens of Bushman Folklore (1919)
Stories, folklore and folk tales from the San Bushman
of South Africa's Kalahari Desert

Specimens of Bushman Folk-lore was published by Dr. WHI Bleek only after he’d overcome many great difficulties (and great they were in late 1800s South Africa).  So complete is this volume that Dr. Bleek even provides explanations on how to make the many click sounds that are endemic to the Bushman language.  Good luck wrapping your tongue around them!