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King Mongkut Rama IV of Siam Signature English.svg Signature of King Mongkut of Siam SPPM Mongkut Rex Siamensium Somdet Phra Poramenthra Maha Mongkut King of the Siamese in Latin Sir John Bowring The Kingdom and People of Siam With Narrative of the Mission to That Country in Volume King Mongkut of Siam PDThailand Rama IV Signatures