Notice sur le Royaume de Khmer ou de Kambodge by Vinh Ky [Petrus Ky] Truong The earliest contribution on Angkor published in an European scientific journal by a Southeastasian scholar. In French
Exploration du grand fleuve du Cambodge (Septembre 1862) [Exploration of the Great River of Cambodia, Sept. 1862] by Louis Bonard A short description of Cambodia and Cochinchina at the early stage of the French Protectorate, "The Admirals' Era". In French
Henri Mouhot´s Travels in Siam, Cambodia and Laos, 1858-1860 by Charles Mouhot & Henri Mouhot First edition of Henri Mouhot's famous relation on his journeys through Indochina. In English