Notes to Accompany a Map of Cambodia, 1851 by Angkor Database An early map of Cambodia drawn in Singapore with information from Constantine de Monteiro, King Ang Duong's representative. In English
Narrative of an Overland Journey from Kampot to the Royal Residence ['Cambodia in 1851'] by Ludvig Verner Helms A rare account of the country of Cambodia and the King's Court at Oudong in 1851, eight years before Henri Mouhot's famous exploration. In English
