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The Journal of the Royal Institute of Thailand Volume IV - 2012 44  References Chulachomglau-Chaoyuhua, Phrabatsomdejphra, Private letters to Queen Saovabha Pongsri, 1992. Publication of Prince Damrong Rajanubhap and Princess Chong Chit Thanom Diskul on the occasion of the 5 th Cycle Birthday of Her Majesty Queen Sirikit, August 12, 1992. King Chulalongkorn’s trip to Europe, 1897, Volume 1, 1980. National Archives, Fine Arts Department, 1980. German Political Archives, German Ministry of Foreign Affairs, File R 19239 Volume 19, 20. SIAM NO. 1 A 6488. Pornsan Watananguhn, Naruemitr Sodsuk, Kanittha Bunpan (editors), 2003. The First Trip to Europe of King Chulalongkorn in 1897. Translation of Collection of letters and telegrammes of King Chulalongkorn, Thai-German version. Bangkok: The Centre for European Studies at Chulalongkorn University. Sirikit, Her Majesty Queen, The Royal Composition, 2004. In Memory of the State Visits of His Majesty the King. Her Majesty Queen Sirikit is gracious to grant Her Royal permission for the first edition of this book on the Auspicious Occasion of the Royal Ceremonial Celebration of Her Majesty the Queen’s Third Cycle Birthday Anniversary on 12 th August 1968 (B.E. 2511) and on the Auspicious Occasion of the Royal Ceremonial Celebration of Her Majesty the Queen’s Sixth Cycle Birthday Anniversary on 12 th August 2004 (B.E. 2547). Secondary Sources Amporn Samosorn, His Majesty King Bhumibol Adulyadej of Thailand–A Model Goodwill Ambassador of the Country. Thai Airways Kinnaree Magazine to celebrate His Majesty The King’s Diamond Jubilee on 9 th June 2006. Also see: http://thaiairways.com Jiraporn Sathapanawatana. Siam in Crisis R.E.112. Bangkok: Teachers Training Department 1976, p. 194. Kurier Warszawski (The Warsaw Courier) Morning Aditional Issue dated 3 July 1897. Pensri Duke, 2001. The Foreign Affairs, Independence and Sovereignty of Thailand From Rama IV to end of the Government of General P. Pibulsongkram. 2 nd edition, The Royal Institute Thailand. Queen Sirikit on Her Majesty’s State Visits in 1960 and 1962