books.google.ca - First printed in 1896, this is a "Narrative of a Journey to Mount Kenya and Lake Baringo with Some Account of the Geology, Natural History, Anthropology and Future Prospect of British East Africa....http://books.google.ca/books/about/The_Great_Rift_Valley.html?id=JRtkpqANIB4C&utm_source=gb-gplus-shareThe Great Rift Valley
