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Quite simply — who coined the phrase "to coin a phrase"?

I'm sure it wasn't one person, but it's the origin that is of interest.

closed as general reference by Matt E. Эллен, J.R., Mitch, kiamlaluno, Mark Beadles May 18 '12 at 13:58

This question is too basic; it can be definitively and permanently answered by a single link to a standard internet reference source designed specifically to find that type of information. If this question can be reworded to fit the rules in the help center, please edit the question.