"Mary Slessor of Calabar: First Source Missionary" is a fascinating biographical book about the life and activities of the outstanding missionary Mary Slessor, who became famous for her work among the African people. The author of the book, William Pringle Livingstone, explores in detail the exploits and contributions of Mary to the development of Christianity in Calabar and other regions of Nigeria. The book tells about the difficult path taken by this brave woman, as well as about her influence on the local population and the socio-cultural context of the late 19th and early 20th centuries. Readers will have the opportunity to learn more about Mary Slessor's missionary history, faith, courage and commitment in her noble task of enlightening and helping the African people."