Reference work,
Primary Source,
Dictionary
- Brill's Digital Library of World War I
- Brill's Encyclopedia of Critical Understanding in Education
- Brill's Encyclopedia of the Middle Ages Online
- Brill's Medieval Reference Library Online (includes Encyclopedia of Medieval Dress and Textiles, Encyclopedia of Medieval Pilgrimage, Encyclopedia of the Medieval Chronicle and Brill’s Encyclopedia of the Middle Ages)
- British Intelligence and Policy on Persia (Iran), c. 1900–1949
- British Intelligence Files on the Chinese in Tibet c. 1900–1950
- British Intelligence on Afghanistan and Its Frontiers, c. 1888–1949
- British Intelligence on Russia in Central Asia, c. 1865–1949
- British Intelligence on Siam (Thailand) and Mainland Southeast Asia, c. 1887–1948
- British Intelligence on the Gulf Arab States, c. 1914–1948
- British Intelligence on Yemen, c. 1880–1967
- British Military Intelligence on China and the Boxer Rising, c. 1880–1930
- Codices Hugeniani Online
- Codices Vossiani Graeci & Miscellenei Online
- Codices Vossiani Latini Online
- Cold War Intelligence
- Delineating British Burma, c. 1826–1949
- Dictionary of Renaissance Latin from prose sources Online
- Dutch Pamphlets Online
- Dutch-American Diplomatic Relations Online, 1784-1973
- Dutch-Catholic Immigration to the Americas Online
- Dutch-Protestant Immigration to the Americas Online
- Encyclopedia of Early Modern History Online / Enzyklopädie der Neuzeit Online
- Encyclopedia of Medieval Dress and Textiles Online
- Encyclopedia of Medieval Pilgrimage Online
- Encyclopedia of the Medieval Chronicle Online
- French Revolutionary Opinions Online
- Fulbright Archives Online, 1949-2016 (excerpts), The
- Grotius Collection Online: Works
- Heinrich Bullinger’s Original Publications Online
- Huguenots Online, The
- Hungarian Reformation Online, The
- Indian Political Intelligence Files, 1912–1950
- Italian Reformation Online, The
- Jesuit Historiography Online
- Mediae Latinitatis Lexicon Minus Online
- Military Architecture
- Natuurkundige Commissie Archives Online
- Palestine: The British Mandate
- Palestine: The Legal Background
- Philipp Melanchthon Online
- Prize Papers Online 1: American Revolutionary War and Fourth Anglo-Dutch War
- Prize Papers Online 2: Seven Years’ War and War of the Austrian Succession
- Prize Papers Online 3: First, Second and Third Anglo-Dutch War and War of the Spanish Succession
- Reformation in Heidelberg Online, The
- Reformed Protestantism: East Friesland and North West Germany Online
- Richard Wagner Online
- The Creation of Modern Iraq, c. 1914–1921
- The Creation of Modern Saudi Arabia, c. 1914–1939
- The Plantin Press Online: A Bibliography of the Works Printed and Published by Christopher Plantin at Antwerp and Leiden (1555–1589)
- The Rise of Modern Turkey, c. 1906–1939
- Times Supplements, The
- Transatlantic Relations Online Digital Archives of the Roosevelt Institute for American Studies
- U.S. Intelligence on Asia, 1945-1991
- U.S. Intelligence on Europe, 1945-1995
- U.S. Intelligence on the Middle East, 1945-2009
- Warfare in North America, c. 1756-1815
- British Colonial Policy and Intelligence Files on Asia and the Middle-East, c. 1880–1950
- British Intelligence on the North-West Frontier, c. 1901–1949
