Merriam-Webster's dictionary of allusions

Common allusions and foreign terms

Puns, allusions, and other word secrets

A dictionary of Biblical allusions in English literature

Dictionary of foreign words and phrases : compiled from English sources and containing foreign words, phrases, mottos, proverbs, place names, titles, allusions and abbreviations from the Latin, Greek, French, Italian, Spanish, German, Russian, Hebrew and other foreign languages, together with English equivalents and definitions and a supplement in Greek orthography.

Who's who and what's what in Shakespeare : giving references by topics to notable passages and significant expressions, brief histories of the plays, geographical names and historical incidents, mention of all characters and sketches of important ones, together with explanations of allusions and obscure and obsolete words and phrases

Brewer's dictionary of phrase and fable.

Shakespeare & Jonson; their reputations in the seventeenth century compared

A dictionary of word makers; pen pictures of the people behind our language.

Word origins : the romance of language

Ovid and the politics of emotion in Elizabethan England

The making of the Alice books : Lewis Carroll's uses of earlier children's literaure