In 1838 and 1839, Roberts spent eleven months traveling and sketching throughout Egypt from Alexandria to Abu Simbel and through Sinai to Petra, Jerusalem, Palestine, and Lebanon. The 247 lithographs that Belgian engraver Louis Haghe then produced at the rate of one a month from the drawings executed during Roberts' trip were published in six volumes as "The Holy Land, Syria, Idumea, Arabia, Egypt and Nubia" (1842-1846) and "Egypt and Nubia" (1846-1849).
