Théodule Devéria help Mariette read inscriptions in Cairo and its surroundings. He tried to accurately document the archaeological sites using drawings, stampings and photographs. His calotype pictures from this trip are often poor in quality, showing a lack of technical skills. In 1860 he was appointed preserving assistant at the Louvre's Department of Egyptology. He revisited Egypt in 1861–62, traveling up the Nile to Philae at the First Cataract, and into Nubia to the Abu Simbel temples. After returning he helped Mariette prepare descriptions of the excavation in Egypt in 1850–54 for publication. In November 1864 Devéria met the future oriental scholar
Battle of Kadesh the "Poem", in temples in Abydos, Temple of Luxor, Karnak, Abu Simbel and the Ramesseum). In addition to these lengthy presentations, there are also numerous small captions used to point out various elements of the battle. Outside of the inscriptions, there are textual occurrences preserved in "Papyrus Raifet" and "Papyrus Sallier III", and a rendering of these same events in a letter from Ramesses to Hattusili III written in response to a scoffing complaint by Hattusili about the pharaoh's victorious depiction of the battle. Hittite references to the battle, including the above letter, have been found at Hattusa, although no