The book "Popular Sketch of Dr. Livingstone's Expedition to the Zambezi and Its Tributaries and the Discovery of Lakes Shirwa and Nyassa, 1858-1864" was written by the great African explorer and missionary David Livingstone. The book details Livingstone's travels in search of the source of the Nile River and the discovery of valuable new knowledge about African lands and their inhabitants. Authentic accounts of encounters with local tribes, natural resources, and personal adventures make this scientific narrative engaging for readers of all ages and interests. "A popular sketch of Dr. Livingstone's expedition on the Zambezi and its tributaries and the discovery of Lakes Shirwa and Nyassa" is an important testimony of the complex but fascinating world of Africa in the middle of the 19th century, which leaves a mark on the hearts of its readers.