This article is from the alt.usage.english FAQ, by Mark Israel misrael@scripps.edu with numerous contributions by others.
Be warned that every book on phrase origins so far published
has etymologies that are more speculative and less rigorous than
those in general dictionaries.
Christine Ammer "Have a Nice Day -- No Problem! : A Dictionary of
Cliches" Plume Penguin, 1992, ISBN 0-452-27004-9
Robert Hendrickson "The Facts on File Encyclopedia of Word and
Phrase Origins" Facts on File, 1987, ISBN 0-86237-122-7 (The
paperback reprint, "The Henry Holt Encyclopedia of Word and Phrase
Origins", is no longer available.)
Nigel Rees "Bloomsbury Dictionary of Phrase and Allusion"
Bloomsbury, 1991, ISBN 0-7475-1217-5
Ivor H. Evans, ed. "Brewer's Dictionary of Phrase and Fable"
14th ed., Harper & Row, 1989, ISBN 0-304-31835-3
Charles Earle Funk "2107 Curious Word Origins, Sayings, and
Expressions from White Elephants to Song & Dance" (an omnibus of
four earlier books, 1948-58) Galahad, 1993, ISBN 0-88365-845-3
 
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