This guide has long been the standard introduction to library research methods, since its first edition in 1993 (Library Research Models).

Guides, tutorials, case studies, and videos that teach students how to find and use primary sources for historical research.

Intended to help standardize the selection and spelling of place names, this thesaurus is also a useful source of information about historical place name usage. Use it also to broaden or narrow the scope of your searches by navigating the hierarchical structure. Compiles information drawn from published gazetteers, atlases, and encyclopedias, like Cambridge World Gazetteer, Columbia Lippincott Gazetteer, Encyclopaedia Britannica, Webster's Geographical Dictionary, Britannica Book of the Year,Times Atlas of World History, GEOnet Names Server (United States National Imagery and Mapping Agency), and United Nations Terminology Bulletin. Good source of information on name and spelling variants for places around the world. Historical information is far from complete (consult local gazetteers for more in depth information), but it makes a good starting point.

Largest Latin dictionary in the world. Covers all Latin texts from the classical period up to about 600 C.E.

The definitive lexical guide to the English language.

Documents and defines the English language, ca. 600 C.E. to 1150 C.E.

15,000 dictionary for the study of English language texts ca. 1100-1500.

Compiles every major dictionary of the French language from the ninth- to the twentieth-centuries.

The most authoritative dictionary of English language slang. 3 vols.