TRAVEL HISTORY
* Colin Thubron - The Lost Heart of Asia
(Central Asia; post-USSR trip with historic sidelights)
* Mark Twain - A Tramp Abroad
(19th century; Germany, Austria, Italy)
* David Dary - The Santa Fe Trail: Its History, Legends, and Lore
(19th century; US)
* Terry Townsend - Jane Austen's Hampshire
(19th century; England)
* Elizabeth von Arnim - The Adventures of Elizabeth in Rügen
(19th century; Germany)
* Victor Hugo - Le Rhin (The Rhine: A Tour from Paris to Mayence by the Way of Aix-la-Chapelle)
(19th century; France and Germany)
* Thomas Jefferson - Memorandum on a Tour from Paris to Amsterdam, Strasburg, and back to Paris
(18th century; France, Germany, and Netherlands)
* Annette Fimpeler - Die Schifffahrt und ihre Fahrzeuge auf dem Niederrhein
(Middle Ages through 19th century; Germany and Netherlands -- unfortunately not in English)
(NON-TRAVEL) FIRST HAND ACCOUNTS AND OTHER PRIMARY TEXTS
* Isak Dinesen - Out of Africa / Shadows on the Grass
(20th century; Kenya)
* Gregory Doran, Antony Sher - Woza Shakespeare!: Titus Andronicus In South Africa
(20th century; South Africa during Apartheid / touring Shakespeare)
* Bernal Díaz del Castillo - Historia verdadera de la conquista de la Nueva España
(16th century; the classic eyewitness account of the conquest of Mexico)
* Gabriel García Márquez - Vivir para contarla (Living to Tell the Tale)
(20th century; Colombia)
* Xinran - The Good Women of China
(20th century; China)
* Reginald Fleming Johnston - Twilight in the Forbidden City
(20th century; China)
* Vladislav Tamarov - Afghanistan: A Russian Soldier's Story
(20th century; Afghanistan and Russia)
* Clea Koff - The Bone Woman: A Forensic Anthropologist's Search for Truth in the Mass Graves of Rwanda, Bosnia, Croatia, and Kosovo
(20th century; Rwanda and Former Yugoslavia)
* National Museum of the American Indian / Smithsonian Institution - Stories of the People: Native American Voices
(19th-20th century; U.S.)
Rina Swentzell, Luci Tapahonso, Tony Chavarria (eds.) / Museum of Indian Arts and Culture (Santa Fe, NM) - Here, Now, and Always: Voices of the First Peoples of the Southwest
(20th century, U.S.)
Maria Grammatico - Bitter Almonds
(20th century; Italy)
Marcel Pagnol - La gloire de mon père
(19th-20th century; France)
* Voltaire - Letters on England
(18th century; England)
* Oscar Wilde - De Profundis
(19th century; England)
* Heinrich Böll - Irish Journal
(20th century; Ireland)
* Evelyn Doyle - Tea and Green Ribbons
(20th century; Ireland)
* Hildegard of Bingen - Selected Writings
(Middle Agles; Germany)
* Otto von Bismarck - Gedanken und Erinnerungen (Thoughts and Reminiscences)
(19th century; Germany -- Bismarck's memoirs)
* Joseph Roth - What I Saw: Reports from Berlin 1920-1933
(Interwar; Germany)
Thomas Mann - Tagebücher (Diaries) 1944-1946
(20th century; U.S. and Germany)
* David E. Murphy / Sergei A. Kondrashev / George Bailey - Battleground Berlin: CIA vs. KGB in the Cold War
(Cold War; Germany, U.S., and Russia)
* Richard von Weizsäcker - Address on the occasion of the 40th anniversary of the end of WWII, May 8, 1985
(20th century; Germany -- to the best of my knowledge, in German only)
MISC. OTHER HISTORY AND BIOGRAPHY
* C.W. Ceram - Gods, Graves & Scholars: The Story Of Archaeology
(chiefly the history of (worldwide) archeology as a field of its own from the 18th century onwards, but with individual chapters hearkening back to earlier times; e.g., re: Prehispanic America and Mesopotamia)
* William Dalrymple - The Last Mughal
(19th century; India)
* Peter Finn, Petra Couvée - The Zhivago Affair: The Kremlin, the CIA, and the Battle Over a Forbidden Book
(20th century; Russia)
* Mary S. Lovell - Straight on Till Morning: A Biography of Beryl Markham
(20th century; Kenya, Britain, U.S.)
* María Rosa Menocal - The Ornament of the World: How Muslims, Jews, and Christians Created a Culture of Tolerance in Medieval Spain
* Patricia Buckley Ebrey, Kwang-ching Liu - The Cambridge Illustrated History of China
* Régine Pernoud - Aliénor d'Aquitaine
(Middle Ages; France and England)
* Frank O'Connor - The Big Fellow: Michael Collins and the Irish Revolution
(20th century; Ireland)
* Tom Standage - The Turk: The Life and Times of the Famous Eighteenth-Century Chess-Playing Machine
(18th century; Europe)
* Muriel Spark - Emily Bronte: Her Life And Work
(19th century; England)
* Daniel Stashower - Teller of Tales: The Life of Arthur Conan Doyle
(19th-20th century; Scotland and England)
* Florian Illies - 1913: The Year before the Storm
(20th century just pre-WWI; Europe)
* Joseph J. Ellis - His Excellency: George Washington
(American Revolution)
* Truman Capote - In Cold Blood
(20th century; U.S.)
* Dean King, John B. Hattendorf - Harbors and High Seas: An Atlas and Geographical Guide to the Complete Aubrey-Maturin Novels of Patrick O'Brian
(more than a guide to the novels, this is actually quite a neat little book with a lot of background on early 19th century naval warfare and commerce generally, as well as the history of the (worldwide) locations metioned in O'Brian's novels -- including places in Africa, South America, and Asia)
@Chris: I'm going to add these myself. ETA: Added.