John Hanning Speke (1827–64) was an officer in the British Indian Army, best known for his explorations of Africa. In the 1850s he embarked on two major expeditions there, the first, to Somalia, inspiring the second, to East Africa, during which he endeavoured to locate the source of the White Nile. This book of 1864 brings together his memoirs of both ventures, in which he draws connections between the two, and provides dramatic recollections of his endurance of captivity, attack, and tropical disease. Despite the obstacles he faced, on his second mission he identified Lake Victoria as the Nile's source; however his claims were heavily contested, as the loss of vital equipment had left questions about its altitude and extent unanswered. The lake was eventually proved to be the source after Speke's tragic death from a gunshot wound, making these memoirs a cornerstone in the historical geography of Africa.