ALLUSIONS AND QUOTATIONS
CRUDEN'S CONCORDANCE An index to every word in the Bible.
BARTLETT'S CONCORDANCE TO SHAKESPEARE An index to every word in Shakespeare.
BARTLETT'S FAMILIAR QUOTATIONS An index to a very large number of the quotations most frequently met with.
BREWER'S DICTIONARY OF PHRASE AND FABLE This explains a great quantity of common allusions in words and phrases.