- Oxford English Dictionary
The Oxford English Dictionary is the standard source for english words from 1150 AD to the present. Entries include spelling, pronunciation, derivation, meaning, and usage. It is available both in print and in electronic formats.
- Middle English Compendium
Contains Middle English Dictionary, HyperBibliography of Middle English (listing the materials cited in the MED), and Corpus of Middle English Prose and Verse (a collection of e-texts), with links to associated electronic sources.
- Britannica Online
Consists of a fully searchable and browsable collection of authoritative references, including Britannica's latest article database; articles not yet in the print Britannica; Merriam-Webster's collegiate dictionary (tenth edition); and: the Britannica book of the year.