Which preposition to use with introducers

of Occurrences 9%

" William Caxton, by common consent, is the introducer of the art of printing into England.

into Occurrences 1%

But Tell was the hero of the shows at which he appeared, and his owner was recognised as being the introducer into this country of the magnificent variety of the canine race that now holds such a prominent position as a show dog.

Which preposition to use with  introducers