"One of the first photographically illustrated travelogues...As an architect interested in urban planning, Pierre Trémaux traveled to Algeria, Tunisia, Upper Egypt, Eastern Sudan and Ethiopia beginning in 1847 (preceding Maxime Du Camp by two years and Félix Teynard by four years). At first, he made drawings and daguerreotypes as the basis for lithographic illustrations but wished to publish a more authentic record of the African culture. On the second expedition, he brought a camera and chemistry to create calotypes of the people, buildings, and landscape of in Libya, Egypt, Asia Minor, Tunisia, Syria, and Greece. A third and final expedition included both photographs and sketches. Trémaux published an account of his travels in parts from 1852 to 1858. It is with the publication of Voyage au Soudan oriental et dans l’Afrique septentrionale exécutés en 1847 à 1854 that the photographically illustrated travel book begins. In this folio, Trémaux made paper photographs and then, for each one also had lithographs created. The two are bound together so the reader has the authenticity of the photograph–thought to be a truthful document–along with the more robust image of the drawn lithograph." - excerpt from the website of the Graphic Arts Collection, Department of Rare Books and Special Collections, Princeton University, 2013