(Cinet)- A copy book of royal decrees with nearly 100 royal notes has just been donated to the National Museum of Vietnam History. The decrees, which include nearly 100 royal notes that praise and promote people who made several contributions to the country, have been published and donated by HCM City-based historian Nguyen Khac Thuan and his wife Ly Thi Mai. The book also includes his translations and explanations for each royal note.The colour photos of the original royal decrees have been printed in a silk book that measures 81cm by 126cm and weighs 150kg. A copy book of royal decrees were issued by various kings of the Nguyen Dynasty (1802-1945), and reprinted on large size. Historian Thuan used to work as a lecturer at the HCM City University of Social Sciences and Humanities. He has written many books on Vietnamese history and has translated as well as edited many other books. Thuan’s wife Mai graduated in literature from the HCM City University of Social Sciences and Humanities. She then did a master’s course in history before training in psychological therapy. She works as a psychologist now.