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For complete lists of research tools, see Research Tools by Subject

Defining Gender

Coverage: 1410-1917

Primary source material from British archives focusing on gender, leisure, and consumer culture. Thematic areas within the collection are Conduct and Politeness, Domesticity and the Family, Consumption and Leisure, Education and Sensibility, and The Body.

Derwent Innovations Index


Coverage: 1963-present (patents); 1973-present (patent citations)

Database of information on international patents in chemical, electrical and electronic, and mechanical engineering. Allows for patent citation searching.

Dictionary of African Biography

Full-Text, Reference

Biographical information on the men and women who shaped Africa's history from earliest times to the present.

Dictionary of Caribbean and Afro–Latin American Biography

Full-Text, Reference

Information on the lives of Caribbeans and Afro-Latin Americans who are historically significant. Covers the entire Caribbean, and the Afro-descended populations throughout Latin America, including people who spoke and wrote Creole, Dutch, English, French, Portuguese, and Spanish.

Dictionary of Irish Biography

Full-Text, Reference

Biographical dictionary covering the "lives of Irish men and women who made a significant contribution in Ireland and abroad, as well as those born overseas who had noteworthy careers in Ireland."

Dictionary of Medieval Latin from British Sources


Searchable dictionary of Medieval Latin vocabulary, focusing on sources from British Medieval Latin texts.

Dictionnaire de la langue française du seizième siècle

Full-Text, Reference

Online edition of Huguet's dictionary of Renaissance French.

Digital National Security Archive


Collections of declassified documents covering US policy decisions around nuclear escalation and non-proliferation, the space race and military uses of space, and the Cuban missile crisis. Also includes collections of documents covering US foreign policy in relation to: Argentina; China; Colombia; Cuba; Mexico; South Africa; and North and South Korea.

Digital Theatre Plus

Streaming video of British theater productions plus supplementary study and teaching materials.

Dissertations and Theses Global Full Text


Coverage: 1861-present

Index of dissertations and theses (about 60% full text) from institutions in the United States, and more selectively, Canada, Britain, and other European countries. Includes dissertations from 1980 to the present and for master's theses from 1988 to the present. (For openly accessible dissertations and theses, see Open Access Theses and Dissertations.)

Drama Online


Digital collection of play scripts "from Aeschylus to the present day." Plays can be searched by criteria such as theme, genre, setting, and cast size. Includes streaming versions of performances from Shakespeare's Globe and National Theatre.