origin of the phrase "witch hunt" ?

Is the term “witch hunt” derived from the activities of the salem witch trials? It seems obvious, but I can’t find any cites purporting to prove this (or even back up this claim).

Can anyone help me out with a cite? Need it for a school paper.

Bad Google-fu today, I guess. Getting lots of hits about the witch trials themselves, (and LOTS of stuff about McCarthy) but I’m looking for the origin of the word(s).

Many humble thanks in advance for any help.

Not necessarily the Salem witch hunts, but witch hunts in general. They happened all over the world from the Middle Ages up until the 1700s

From answers.com

The OED has a cite from 1885, in King Solomon’s Mines used in the sense of an actual hunt for witches. This is the earliest cite(so far) in print.

This is great stuff. Thank you to everyone who posted.

Lissa, for pointing out it may pre-date Salem [MPython] "What else floats in water? [/MPython]

Exapno Mapcase, thanks for the answers.com ref Didn’t even think of that.

SamClem, for the King Solomon’s Mines reference.