General travel guides for Tanzania:
Tanzania, 4th: The Bradt Travel Guide – Recommended!
Tanzania – The Rough Guide
Lonely Planet Tanzania, Zanzibar & Pemba, by Mary Fitzpatrick
Spectrum Guide to Tanzania, by Camerapix
General natural history guides:
National Audubon Society Field Guide to African Wildlife – Recommended!
Lonely Planet- watching wildlife guide to East Africa – Recommended!
The Safari Companion: A Guide to Watching African Mammals Including Hoofed Mammals, Carnivores, and Primates, by Richard D. Estes, et al – Recommended!
Kingdon Field Guide to African Mammals, by Jonathan Kingdon
Field Guide to the Birds of East Africa: Kenya, Tanzania, Uganda, Rwanda, and Burundi , by Stevenson & Fanshawe.
Field Guide to the Reptiles of East Africa, by Stephen Spawls.
Pyramids of Life, by Harvey Croze – Recommended!
On Mount Kilimanjaro:
Climbing Mount Kilimanjaro, by Susan Stoddard, Stephen Carmichael,
Kilimanjaro & Mount Kenya: A Climbing and Trekking Guide, by Cameron M. Burns
Origins of humanity:
The Hominid Gang, Behind the Scenes in the Search for Human Origins, by Delta Willis
Origins Reconsidered: In Search of What Makes Us Human, by Richard E. Leakey
General African History:
We must run while they walk; a portrait of Africa – Julius Nyerere, by William Edgett Smith
Natural Order on the African Plain, by Mitsuaki Iwago – Recommended!
Nomads of the Serengeti, by Robyn Stewart.
Tanzania – A natural Eden, by Javed Jaferji.
Snows of Kilimanjaro, by Ernest Hemingway.
The Zanzibar Chest: A Story of Life, Love, and Death in Foreign Lands, by Aidan Hartley.