A New Historical Relation of the Kingdom of Siam, by Simon de La Loubère (1693) (start transcription)
A Relation of the Voyage to Siam, Performed by Six Jesuits Sent by the French King, to the Indies and China in the Year 1685, by Guy Tachard (1688) (transcription project)
Burmese Invasions of Siam, Translated From the Hmannan Yazawin Dawgyi, by Thien Subindu (1908) (start transcription)
Description of the Kingdom of Siam, by Jeremias van Vliet (1910) (start transcription)
English Intercourse With Siam in the Seventeenth Century, by John Anderson (1890) (start transcription)
The History of Japan, etc, Together With a Description of the Kingdom of Siam, by Engelbert Kaempfer, translated by Johann Caspar Scheuchzer (1727) (transcription volumes: 1, 2)
The Statement of Khun Luang Ha Wat, by Vivadhanajaya (1935) (transcription volumes: 1, 2)
The Voyages and Adventures of Ferdinand Mendez Pinto, the Portuguese, by Fernão Mendes Pinto (1891) (start transcription)
History of Rattanakosin
A Narrative of Travel and Sport in Burmah, Siam and the Malay Peninsula, by John Bradle & John A. Lawson (1876) (start transcription)
An Oriental Land of the Free; or, Life and Mission Work Among the Laos of Siam, Burma, China and Indo-China, by John Haskell Freeman (start transcription)
Birmah, Siam, and Anam, by Josiah Conder (1826) (start transcription)
Correspondence Respecting the Affairs of Siam, by Foreign Office (1894) (start transcription)
In the Far East: A Narrative of Exploration and Adventure in Cochin-China, Cambodia, Laos, and Siam, by William Henry Davenport Adams (1879) (start transcription)
Journal of an Embassy From the Governor-General of India to the Courts of Siam and Cochin China, by John Crawfurd (1830) (transcription volumes: 1, 2)
Siamese and English Records of the Siamese Embassy to England in 1857–1858 (1928) (transcription project)
Siam, the Land of the White Elephant, as It Was and Is, by George Blagden Bacon (1893) (transcription project)
The Boy Travellers in the Far East, Part Second: Adventures of Two Youths in a Journey to Siam and Java, With Descriptions of Cochin-China, Cambodia, Sumatra and the Malay Archipelago, by Thomas Wallace Knox (1880) (start transcription)
The Kingdom and People of Siam, by John Bowring (1857) (transcription volumes: 1, 2)
The Kingdom of Siam, by A. Cecil Carter (1904) (start transcription)
The Kingdom of the Yellow Robe, by Ernest Young (1898) (start transcription)
The Laos of North Siam, by Lillian Johnson Curtis (1903) (start transcription)
The Mission of Sir James Brooke to Siam, by Oskar Frankfurter (1911) (start transcription)
The Mission to Siam and Hue the Capital of Cochin China in the Years 1812–2, by George Finlayson & Thomas Stamford Raffles (1826) (start transcription)
The Nearer and Farther East: Outline Studies of Moslem Lands and of Siam, Burma, and Korea, by Arthur Judson Brown & Samuel Marinus Zwemer (1909) (start transcription)
The Philippine Islands, Moluccas, Siam, Cambodia, Japan, and China, at the Close of the Sixteenth Century, by Antonio de Morga (1868) (start transcription)
The Religion of Siam, by "Viator" (1857) (start transcription)
Travels in the Central Parts of Indo-China (Siam), Cambodia, and Laos, by Charles Mouhot & Henri Mouhot (1864) (start transcription)
Through the Buffer State: A Record of Recent Travels Through Borneo, Siam and Cambodia, by John MacGregor (1896) (start transcription)
To Siam and Malaya in the Duke of Sutherland's Yacht Sans Peur, by Florence Caddy (1889) (start transcription)
Where the Strange Trails Go Down: Sulu, Borneo, Celebes, Bali, Java, Sumatra, Straits Settlements, Malay States, Siam, Cambodia, Annam, Cochin-China, by Edward Alexander (1921) (start transcription)
History of law
The New Laws on Civil Procedure, by Henri Eygout (1932) (start transcription)
The Introduction of Western Culture in Siam, by Damrong Rajanubhab (1927) (start transcription)
The Modern Buddhist: Being the Views of a Siamese Minister of State on His Own and Other Religions, by Chaophraya Thiphakorawong (1870) (start transcription)