""A Private Journal Kept During The Niger Expedition: From The Commencement In May, 1841, Until The Recall Of The Expedition In June, 1842"" is a historical book written by William Simpson. The book is a personal account of the author's experiences during the Niger Expedition, which was an attempt by the British government to explore the Niger River and establish trade routes in West Africa. The journal covers the period from May 1841 to June 1842,...