Which preposition to use with whippers

as Occurrences 1%

But I wanted to be back on free soil, out of an atmosphere which killed all manhood, and furnished women-whippers as a substitute for men.

in Occurrences 1%

there was a sect of whippers in Germany, that, to the astonishment of the beholders, lashed, and cruelly tortured themselves.

to Occurrences 1%

There could be no peace with me in the editorial chair, for I was an abolitionist and would light slavery and woman-whippers to the death, and after it.

Which preposition to use with  whippers