This is arguably the most comprehensive anthropological profile of the Agikuyu people. Written in 1910 by the Routledge couple, the book is now out of print.
Luckily, you can download an e-copy here:
https://drive.google.com/file/d/1RMioD6gCBUgcWkrEvkywNnjk5LIcBBQ-/view?usp=sharing
