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

Intended to help standardize the selection and spelling of place names, this thesaurus is also a goldmine of information about historical place name usage. Use it also to broaden or narrow the scope of your searches by navigating the hierarchical structure.

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.