Richard Buchta, (1845-1894) was an Austrian explorer in East Africa, travel writer, painter and photographer. He travelled widely, first to Germany, France, the Balkans, and Turkey, to Egypt and the Sudan. Upon his return to Germany and later to Austria, he published several books on the geography, ethnic groups and political conditions of the historic Sudan in the 1870s and 1880s. His photographs are regarded as the earliest photographs of people living along the White Nile in Sudan and beyond. Some famous examples of these photos include the ‘Kadi of Khartoum’ and ‘Portrait of a Zande witchdoctor’.