A new book on The Royal House of Cambodia by Ambassador Julio A. Jeldres Ph.D, a former Senior Private Secretary and Official Biographer to His Late Majesty the King Father Norodom Sihanouk, launched by His Majesty King Norodom Sihamoni, at the Royal Palace on 19 December 2017. The 300+ pages book is an updated version of a smaller book written by Ambassador Jeldres in 2003 and it contains several new chapters on His Majesty King Norodom Sihamoni and other senior members of the Royal family, as well as Royal descendants working in Cambodia. It has new chapters also on previous monarchs beginning with His Majesty King Ang Duong. New portraits of the senior members of the Royal Family have been photographed by well-known Cambodian photographer Makara Ouch. The Book is published by the Sleuth Rith Institute/Documentation Center of Cambodia and will be distributed by Monument Books.